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FDA can’t find cause of pet poison, seeks help

  • This Sept. 2013 image provided by Patricia Cassidy shows her dog Doodles, while he was sick right before his Sept. 9, death, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007.  (AP Photo/Patricia Cassidy)

    This Sept. 2013 image provided by Patricia Cassidy shows her dog Doodles, while he was sick right before his Sept. 9, death, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

  • This July 2013 image provided by Patricia Cassidy shows her dog Doodles, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

    This July 2013 image provided by Patricia Cassidy shows her dog Doodles, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

  • This July 2013 image provided by Patricia Cassidy shows her dog Doodles, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

    This July 2013 image provided by Patricia Cassidy shows her dog Doodles, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

  • This July 2013 image provided by Patricia Cassidy shows Cassidy with her dog, Doodles, at the veterinarian in Chattanooga, Tenn., after doodles had been diagnosed with kidney failure. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Courtesy Patricia Cassidy)

    This July 2013 image provided by Patricia Cassidy shows Cassidy with her dog, Doodles, at the veterinarian in Chattanooga, Tenn., after doodles had been diagnosed with kidney failure. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Courtesy Patricia Cassidy)

  • This July 2013 image provided by Patricia Cassidy shows Cassidy with her dog, Doodles, at the veterinarian in Chattanooga, Tenn., after doodles had been diagnosed with kidney failure. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Courtesy Patricia Cassidy)

    This July 2013 image provided by Patricia Cassidy shows Cassidy with her dog, Doodles, at the veterinarian in Chattanooga, Tenn., after doodles had been diagnosed with kidney failure. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Courtesy Patricia Cassidy)

  • This undated photo released by the Nevada Air National Guard shows Sparks Middle school math teacher and former Marine Michael Landsberry, 45. Authorities say the student who opened fire on a the Nevada middle school campus, wounding two students and killing Landsberry, got the weapon from his home. Washoe County School District Police said they are still working to trace where the gun was bought. Police said a Sparks Middle School student was the lone shooter and turned the weapon on himself. (AP Photo/Nevada Air National Guard)

    This undated photo released by the Nevada Air National Guard shows Sparks Middle school math teacher and former Marine Michael Landsberry, 45. Authorities say the student who opened fire on a the Nevada middle school campus, wounding two students and killing Landsberry, got the weapon from his home. Washoe County School District Police said they are still working to trace where the gun was bought. Police said a Sparks Middle School student was the lone shooter and turned the weapon on himself. (AP Photo/Nevada Air National Guard)

  • This Sept. 2013 image provided by Patricia Cassidy shows an impression of her dog Doodles' paw print. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

    This Sept. 2013 image provided by Patricia Cassidy shows an impression of her dog Doodles' paw print. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

  • This Sept. 2013 image provided by Patricia Cassidy shows an impression of her dog Doodles' paw print. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

    This Sept. 2013 image provided by Patricia Cassidy shows an impression of her dog Doodles' paw print. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

  • This Sept. 2013 image provided by Patricia Cassidy shows her dog Doodles, while he was sick right before his Sept. 9, death, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007.  (AP Photo/Patricia Cassidy)

    This Sept. 2013 image provided by Patricia Cassidy shows her dog Doodles, while he was sick right before his Sept. 9, death, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)

  • This Sept. 2013 image provided by Patricia Cassidy shows her dog Doodles, while he was sick right before his Sept. 9, death, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007.  (AP Photo/Patricia Cassidy)
  • This July 2013 image provided by Patricia Cassidy shows her dog Doodles, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)
  • This July 2013 image provided by Patricia Cassidy shows her dog Doodles, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)
  • This July 2013 image provided by Patricia Cassidy shows Cassidy with her dog, Doodles, at the veterinarian in Chattanooga, Tenn., after doodles had been diagnosed with kidney failure. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Courtesy Patricia Cassidy)
  • This July 2013 image provided by Patricia Cassidy shows Cassidy with her dog, Doodles, at the veterinarian in Chattanooga, Tenn., after doodles had been diagnosed with kidney failure. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Courtesy Patricia Cassidy)
  • This undated photo released by the Nevada Air National Guard shows Sparks Middle school math teacher and former Marine Michael Landsberry, 45. Authorities say the student who opened fire on a the Nevada middle school campus, wounding two students and killing Landsberry, got the weapon from his home. Washoe County School District Police said they are still working to trace where the gun was bought. Police said a Sparks Middle School student was the lone shooter and turned the weapon on himself. (AP Photo/Nevada Air National Guard)
  • This Sept. 2013 image provided by Patricia Cassidy shows an impression of her dog Doodles' paw print. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)
  • This Sept. 2013 image provided by Patricia Cassidy shows an impression of her dog Doodles' paw print. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007. (AP Photo/Patricia Cassidy)
  • This Sept. 2013 image provided by Patricia Cassidy shows her dog Doodles, while he was sick right before his Sept. 9, death, in Chattanooga, Tenn. Doodles is believed to be one of 580 dogs in the U.S. that have died in the past six years from eating pet jerky from China. Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians Tuesday to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007.  (AP Photo/Patricia Cassidy)

All that’s left of Doodles are his ashes, a clay impression of his paw and a whole lot of questions owner Patricia Cassidy has about his mysterious death.

Doodles is believed to be one of 580 dogs in the United States that have died in the past six years from eating pet jerky from China.

Baffled by the cause and seeing another surge in illnesses, the Food and Drug Administration reached out to owners and veterinarians this week to help it find the poison behind the sickening of at least 3,600 dogs and 10 cats since 2007.

Within hours of eating the suspect jerky, pets lost their appetite, became lethargic, vomited and had diarrhea and other symptoms. The strips made of chicken, duck, sweet potatoes or dried fruit were sold under a variety of brand names.

There was a decrease in 2007 after some products were voluntarily removed from the market, but the FDA said it didn’t want to conduct a recall without a definitive cause. Those products included Milo’s Kitchen Chicken Jerky Treats and Chicken Grillers, made by Del Monte, and Waggin’ Train and Canyon Creek Ranch dog treats, made by Nestle Purina.

But in the years since, the FDA has gotten complaints from pet owners and veterinarians who have seen repeated cases of kidney failure, gastrointestinal bleeding and a rare kidney disorder, the FDA said.

The FDA’s Center for Veterinary Medicine has run more than 1,200 tests, visited pet treat manufacturing plants in China and worked with researchers, state labs and foreign governments but hasn’t determined the exact cause of the illness.

Testing is complicated because the poison may have come from the manufacturing plant, shipping, transportation or anywhere along the way. Scientists have to know what they’re looking for to test for it.

“I grew up watching Quincy and CSI and they have given us this look at forensics – you put samples in and answers come out the other end,” said Dr. Tina Wismer, medical director of the Animal Poison Control Center of the American Society for the Prevention of Cruelty to Animals. “It doesn’t work that way.”

That’s little consolation to Cassidy in Chattanooga, Tenn. Doodles died Sept. 9 at the age of 6. In just three months, he turned from a vibrant 16-pound shih tzu into a frail, 6-pounder who couldn’t eat or drink and had so little left in him he could only vomit yellow bile.

“He was such a loving little guy and so cute. Every day my daughter will say, ‘Mom, I don’t know when the holes in our hearts will be repaired.’”

Cassidy promised Doodles she would wage war as long as it took to get the products off store shelves or, at the very least, labeled so people know it might be deadly.

The jerky mystery is the worst case of tainted pet food from China since 2007, when there was a nationwide recall of food made by Menu Foods and 1,950 cats and 2,200 dogs died.

Kidney failure caused all of those pet deaths and the poison was found to be tainted melamine from plastic packaging in the wheat gluten. About 150 brands of dog and cat food were recalled and the recall included some of the biggest names in pet food.

A federal grand jury indicted two Chinese nationals and the businesses they operate, as well as the U.S. company ChemNutra Inc. and its CEO for their roles in importing the poisonous products. A class-action lawsuit awarded more than $12.4 million in compensation to pet owners whose pets died from the poisoned food.

Veterinarians can only tell pet owners they don’t know what’s causing their animals to get sick and that’s hard to do, said Dr. Karl Jandrey, an emergency and critical care vet at the Veterinary Medical Teaching Hospital at the University of California, Davis. They have treated several dogs for what they believe was poisoning from the treats, but no patient has died, he said.

Dexter, a 3-year-old, 19-pound miniature schnauzer also survived, but it cost owner Rich Phillips of North Richland Hills, Texas, about $1,200, he said.

In April, Dexter started throwing up and couldn’t stop. He spent the night at an emergency clinic and the next day at the vet’s. Test after test was inconclusive. The dog was given an IV and anti-nausea medicine and sent home. That’s when Phillips saw the package of chicken jerky treats and knew that was the cause. “We were lucky, we caught him quick,” Phillips said. Dexter had only had about two of the treats and has been fine ever since that night.

No one knows how many treats a pet has to eat before it starts getting sick, said Dr. Amy Bowman, regional medical director for Banfield Pet Hospital in Reston, Va.

“Some say it’s a single serving, some say the whole bag,” she said. Her advice is to avoid jerky treats if the label says it comes from China. There are all kinds of healthy treat substitutes, including apples, uncooked green beans and carrots, she added.

A lot of pet owners transfer food and treats into other containers at home to keep pets and pests out, but Wismer suggested keeping labels with lot numbers and manufacturers.

Imported pet food is inspected when it arrives in the United States but only randomly, to check for things like mold, Wismer said.

Dr. Barry Kellogg, senior adviser to the Humane Society Veterinary Medical Association, called for increased testing and stricter guidelines on labeling of imports. If only part of a product is from China and it is put together here, labels don’t have to say made in China, he said.

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