My dogs have been bitten by cotton mouth snakes. We saw one of them get bit. She bit it and shook it in the air, and why she was shaking it, the snack bit her in the side of her face, just behind her mouth, and below her eye. My wife and I were sitting on the porch and saw it happen.
That was our first experience with dogs and snake bites. We took her to the emergency vet and they gave her some Benadryl. They said that dogs can handle cotton mouth and copper head bites pretty easily. The poison coagulates inside them, and then slowly breaks down over a few weeks. We could see what looked like something swollen under the skin of her neck for awhile, and then it slowly went away. She didn't seem to care about the bit at all. No reaction, no sign of pain or suffering from it at all.
The next year we found a dead cotton mouth in the yard and the same dog had the same swelling in her neck just like the year before. Guess she caught it, shook it to death, and got bit.
Since then we've found several more dead cotton mouths in our dog yards, along with rat snakes and even a copper head. Except for those two times that we saw the actual attack, and the swelling the year after, we have no idea which dog killed the snakes, and if they were bit.
I think it was the year after the second bite, but it might of been that same year, we had two of our dogs go after a cotton mouth. My wife and I were sitting on the back porch and they took off to the fenceline. They both bit the snake at the same time, they both shook it violently at the same time, and the snake broke in have with a VERY LOUD POPPING sound!!!! You had to hear it to believe it would be so loud. Neither were bit, and it was over in seconds.
The vet said that the only snake here in my area of East Texas to worry about with dogs is the rattle snake. We have them, but they are extremely rare and docile. The only way to get bit by one is to really push the issue and mess with it. Dogs cannot handle the venom and it's almost always fatal if bit by one.
This is my wife with our girl at the vet after the bite. The third picture shows her a couple years later. The hair never grew back 100%, but you would have to look hard to see where it happened.
