I have a 12 week old lab puppy that im trying to train to find shed deer antlers and up until a couple days ago she was doing great. When I threw them she would go and either lay down and chew on them or bring them back to me. I give her treats everytime she goes after them but 2 or 3 days ago she started not wanting anything to do with them. The antlers have never hurt her so she doesnt have any reason to be scared of them but to me it seems like she is scared. She does good with regular sit, stay, come commands but for the past couple days I cant even get her to chew on the antlers.