If going for realism, it could be argued that rare ferocious beasts, or their unique body parts could have very high trophy value (as opposed to humans). Just

If going for realism, it could be argued that rare ferocious beasts, or their unique body parts could have very high trophy value (as opposed to humans). Just witness the extinction of many real life species that are killed for perceived magical qualities of a small body part. For added realism, it makes it easy to just leave the body to rot and sell the small rhino horn to shady criminals. For added effect, if they are rare enough, they become more valuable the more you kill them...