A puppy is a newborn or very young canine (dog). Charles M. Schulz, the creator of the Peanuts cartoons, wrote that "Happiness is a warm puppy."
That's certainly a view shared by many bloggers, who usually write about puppies, belonging to themselves and others, in the warmest of terms. They might be sharing cute videos, or pictures, or seeking good homes for them.
However, some bloggers find that puppies can have their downsides, whether they are chewing up the carpets or just being defiant.
Many bloggers are also concerned about the conditions of puppy mills.