I’ve got the best tip to tame these things!! Make a 1 by 1 square with at least one double door on it and the rest walls. Or you could have all four walls be double doors! Easiest way is to pick it up and put it in the one by one or you could just chase it into it and shut the door! Now just stand on the outside of it and every time it lets you feed it just walk up to its face (still on the outside of it) and it should just let you feed it berries or kibble or whatever you’re using through the wall or double door! I’ve tamed 10+ of these and have always used this trick!!! Good luck taking! :D