Deer eat meat. In nature, there's (probably) no such thing as a true herbivore, no matter what a vegan tells you.
This is something I always knew. Field and Stream even did a piece on this.
When Bambi Eats Thumper…and Birds, Fish, Squirrels, and Even Human Remains
Turns out, deer like meat too. Need proof? Here is a roundup of man-eating deer, goose-eating elk, and four other carnivorous cervids
https://www.fieldandstream.com/do-deer-eat-meat/ And here is a video of a deer eating a hawk, mis-labeled as "deer saves rabbit". The deer did not care about the rabbit, it simply knew the hawk was distracted, nailed it, and ate it.
https://www.youtube.com/watch?v=T3daEXYe19g
Don't let a anti-hunter fool you - we are not made to go without meat, unlike deer we have canine teeth, which only go on meat eaters. Deer do not even have canines and they occasionally eat meat.