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.
Top Tools & Guides. Hardening and Blockage of the Arteries in Dogs. Atherosclerosis in Dogs. Atherosclerosis is a condition in which lipids (the oily substance that is part of the cell structure), fatty materials, such as cholesterol, and calcium collect along the walls of the arteries (blood vessels that carry oxygen-enriched blood).