I have a young cottontail living in my yard that has a growth on the top of hind leg towards his back...It seems to be spreading on his back. I would like to catch him and take him to a vet, but don't want to scare him to death and kill him. I am assuming that the bigger bunny that hangs around is his mom. I don't want the mom to reject him if we touch him. Let me know how to catch him safety!!!!