I Just Got A New West Highland White Terrier Puppy. He Is 8 Weeks Old And Is Perfect, Besides His Pooping.?

He poops about 6 times an hour, and he seems to strain himself when he poops. He sometimes whimpers. He isn’t constipated because each time he tries, he poops. The poop isn’t very hard or very soft, it’s right about in the middle. I don’t understand what would be making this happen. He eats fine, doesn’t throw up, and is active. He just has this pooping problem.

I Just Got An 8 Week Old West Highland White Terrier Puppy. He Is Perfect, Besides His Pooping.?

He poops about 6 times an hour, which is obviously quite excessive, and he seems to strain himself when he poops. He sometimes whimpers. He isn’t constipated because each time he tries, he poops. The poop isn’t very hard or very soft, it’s right about in the middle. I don’t understand what would be making this happen. He eats fine, doesn’t throw up, and is active. He just has this pooping problem.
We feed him on a regular schedule. Once in the morning and once at night. We feed him purina beneful for puppies.