(1.12.2) Need help with my entity please !

Hi ! first things excuse me if my english is bad (because I'm french and turkish) second things excuse me if I do some error (it's my first topic) so , I made a mod that will include some entity I've started with a coyote.... so in the coyote's class I cannot see/found what did I need to add for my entity attack us when he hurt him because actually in game when I attack him it jump to me but do nothing and he won't move to me for trying to kill me .... please help !

ps: if you know how to make it just like a wolf that will be perfect because I try to do exactly the same thing but with a different texture .

EntityCoyote: https://pastebin.com/ja9cwnHc