ok so today my aunt's little pup died suddenly. She is convinced my 5 year old did something. but we don't know. He is a young dog and in good health, but today he wasn't acting right. I noticed him laying in the flower bed, so i put him up on the front porch and then he made this cough/gag sound and acted like he gagged and was going to throw up but didn't but was acting like he couldnt breathe and didnt seem to wanna be messed with. about 30 mins later he died. Please help