The dog might be constantly following because it's lost and thinks the character it's following can help. Or it could be a loyal companion and doesn't want to leave the side of whoever it's following. It all depends on the context and the story the cartoon is trying to tell.
Maybe the dog sees something interesting or is attached to a particular character. It could just be following out of curiosity.
The dog might be constantly following in the cartoon because it's looking for food or it's trying to be part of the action. Maybe it's following its owner or a character it likes.
The little dog might be following the big dog because they have a bond or because the big dog is leading the way to something exciting or important.
Maybe the dog is hungry and wants to find the food to satisfy its hunger.
It could be that the car was behaving strangely or matching the description of a vehicle involved in a crime. So, the cops are following it to investigate.
Maybe the troll has something the boy wants or the boy is just curious.
Well, baby ducks follow their mom because she shows them the way, helps them find food and teaches them important survival skills.
In many cases, dog following cartoons may have some elements of reality but also add exaggerations or fictional elements to make the story more engaging. So, it varies from one cartoon to another.
Maybe it's for a funny or creative idea. Could be part of a costume party or a special event.
Maybe it's for a funny and creative twist. It could be to catch people's attention and make them laugh.
Maybe it's not hungry or doesn't like the food presented to it.