Your dog or cat is limping, so you decide to give them a simple non-prescription pain reliever - maybe an aspirin or Tylenol.
Not a good idea.
Dr. Marty Becker with Vetstreet.com says pets don't get people medicine unless specifically prescribed by your vet.
"Pets metabolize medications differently," he said. "For example, if you were to give a cat even a tiny dose of Tylenol or Aleve, you're probably going to end up with a deceased cat. They take very, very, very small doses, almost too small to even measure out."
With dogs, a drug might work well in one breed and not in another, Dr. Becker said.
One more pet-related drug problem: the accidental ingestion of a medication. Typically, this is with dogs, when they get into something not put away safely or you drop a pill or tablet and the dog swoops in and woofs it down.
That's why it's so important to teach your dog the "leave it" command. I've been in that situation and I'm really glad my dog knew what to do.
The Basics of Pet Medication