I have had a dog and a cat bitten by a copperhead.
The cat dissapeared for two days and when she had enough strength she walked home her head was swollen and I found the two fang marks on her neck. She also from then on carried her head in a tilted position and couldn't close one of her eyes. She was taken straight to the vet and had to stay their a few days, and was on several different meds.
The dog was actually my brothers, a coonhound, but we both still lived at home at the time. So I took responsibility for her. Anyway the dogs back leg was swelled up about 4 times normal size. I found the fang marks on her too. She recieved a couple days vet care too. And was on very strong antibiotics because it also was infected.
Both of my animals survived, but they did get vet care. Although the cat, we assume was bitten a couple days before we found her again.
I hope this isn't from a snake bite.
If a poisonus snake did cause the bite, if you look carefully all around her skin by pulling up her hair, you might be able to see two fang marks.
It could also be an allergic reaction to a bee sting. I know you can give a dog benadryl, but can't remember the dosage for a dog. I will see if I can find it.
I will see if I can find anymore info for you, since this situation is not in your control. I understand.
