Hello. Thank you so much for replying. I did notice some small tapeworms in his feces. I just had him checked by a vet and was given a deworming shot along with other medications. We're hoping to see positive results in the following days.Agree, that really round-bellied look can be the result of worms, which may also make it hard for a puppy to get enough nutrition and/or put on weight. I'd say a vet visit and a fecal sample test are in order.