I have a 19-week-old dachshund/chihuahua mix. He only goes poop 2-3 times a day. Often, he doesn't have to go right after he eats, which I've heard a lot of other puppies have to do. Should I be worried, or is this normal? He usually poops when I take him out first thing in the morning, and then again in the afternoon. Sometimes, he'll go after breakfast as well, though he doesn't usually go after dinner.