My dog growls and shows his teeth at me
My 6yr springer spaniel whom we've had for 2 yrs and is a good boy but lately has begun to show his teeth and growl when he is feed. We make him sit and wait w/the bowl right next to him. We just introduced a new trick in which he has to bark for his food. He has been doing this trick for about 4 wks.But the last few times he has shown his teeth and growled when we ask him to speak. He is then sent to his bed and made to stay for an hr. Feed again w/no problem. Any idea why and how to handle this?