The cartoon dog might have been hurt due to its own recklessness or because of a villain's actions. Sometimes, such incidents are used to show the dog's growth and resilience in the story.
First, draw the basic shape of the dog. For the hurt paw, show some swelling or a scratch. Use light and shadow to give it a 3D effect. Also, add some background to set the mood.
Maybe the boy was having a bad day and took it out on the dog. But that's no excuse for such bad behavior.
Maybe the dog was too adventurous and got into some trouble. It could have stepped on something sharp or had an accident while playing.
Maybe the dog was scared or confused and acted out of instinct to hurt, but then felt guilty and decided to help.
Mange definitely can harm a dog. The mites that cause mange cause irritation and damage to the dog's skin and coat. This can result in hair loss, infections, and a lot of pain for the poor dog if not dealt with promptly.
It could be that the cartoon dog was in a fight or had an accident, causing the injury to its tongue and resulting in it carrying it. Maybe it's trying to protect the hurt part.
They exist maybe because such situations evoke strong emotions and people use memes to express those feelings in a visual and often humorous way.
Hurt dog cartoons cause controversy as they may trigger emotional distress in those who care about animal welfare. Plus, they could set a bad example and make light of a serious issue.
Maybe it's a story about the dog's brave journey to find a cure for its leg injury, meeting various characters who offer support and advice.
Maybe it's for added cuteness or to create a unique character trait.