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.
Blockage can occur due to trauma, inflammation, medications, and rarely tumors. In certain breeds of cats and dogs, the problem is their anatomy. Breeds with flat faces (brachiocephalic) such as Boxers, Bulldogs, and Pugs, can have epiphora due to their flattened facial anatomy. Symptoms of excessive tearing. Animals with excessive tearing have wet or moist fur below their eyes and may have other findings based on the underlying problem. If the tearing is chronic, animals develop a reddish brown stain below their eyes. The area may also be moist and their skin may become red and irritated. Diagnosis of excessive tearing If you think your pet has excessive tearing, you should take them to your veterinarian.