So I have a dwarf bunny and he had ran away and was out for 2 days until someone down the road found him and we went and got him lately he has been acting strange like not moving around much just sits in the corner and faces away and i can hear him breathing and making like weird whining noises I would describe it as I am wondering what is wrong and if i need to take him to the vet or something? He eats fine it seems.