My bunny, in the past 3 days, is doing something odd every morning I go to give him food and he first sees me. I’ll walk by and he’ll stand on all four legs, arch his back, and open his mouth at me. Kind of like a cat hissing angrily. I’m very confused. Have I done something wrong? Is he stretching? He has food and water, and we let him out every day or nearly every day with free range. I came here hoping for answers. 

As a side note, were not sure if he is a boy or girl, he’s too young, but we call him a he.

Other side note, he seems very upset with me lately .

Thanks for your time.

Beth