I had a pet Coyote who would go snake hunting with me in the barn. She got bit by a copperhead once and I cried all night because her head swelled up to the size of a melon. My dad assured me she would be alright and the next morning she was back out with me in the barn. I guess wild animals have a different metabolism to protect them from poisons.
When my little female pup got attacked by Coyotes in my backyard, I found her wounded pretty bad. She couldnt move from her wounds. I thought she was dead, but as soon as she saw me her whole butt started wiggling. She survived. Didnt mean to hijack, just wanted to share some stories.