I agree with wound infection. Probably a puncture would from cactus or mesquite daggers. Shouldn't be an issue for the deer.
The dog is a gentleman, I want to go to his Heaven not man's.--Mark Twain
If dogs don't go to Heaven, then when I die I want to go where they went.--Will Rogers
The more I learn about people, the more I like my dog.--Mark Twain