It is suspected that cats may be more likely to develop permethrin toxicity because they have different liver metabolic pathways to other species â in particular, they have a deficiency in the enzyme hepatic glucuronosyl transferase. Source(s): http://www.fabcats.org/owners/poisons/pe...
Re: Swallowed chunk of rawhide. In all honesty you need to contact your vet. Rawhides do cause blockages, especially in smaller dogs, because the pieces are too large to pass through the intestine. Contact your vet, and ask for some x rays. Cheapest, and most effiecient way to see if there is a blockage, how large the piece is, and if it is moving through.
The rolled rawhide bones are more likely to cause fractures and break teeth. The rawhide bones may also be dangerous for the dog as chunks of bone may get stuck in the throat of the dog and cause choking. In addition, bone splinters can cause internal organ punctures. In some cases, the rawhide bones may be difficult to digest, especially if the dog has a diet that is poor in fibers. The rawhide bone residues may stay in the stomach and may even cause an intestinal obstruction. This condition may lead to surgery, if the condition is severe. Some dogs may be allergic to rawhide bones and these may cause vomiting and diarrhea.