First of all, I do not understand how some of the reviews said it was a ripoff of Snoopy, had foul language, and had a drug reference. This movie was adorable and hilarious. The film had an excellent use of puns and family-friendly jokes. There were no similarities between Peanuts and this film besides the fact that there's a boy and his dog. I am not sure where that reviewer got that drug reference from because it was definitely not in this film. I'll touch on the foul language later.
The bullying aspect of this film was shown because bullying is a real problem in America. Yes, Penny was a brat and she was a terrible person. However, this is life. Life isn't full of rainbows and sunshine. Dreamworks tried to portray what some kids go through at school because of their home life.
There were some violent parts like the explanation of mummification and sword fights, but nothing too gory. The adult humor that was included was nothing sexual, and instead just about historical facts. For example, there was a joke about Bill Clinton. Arguably, some jokes a couple of parents had issues with was the booby joke and the "I came here to stop you from touching yourself" joke. They were not meant to be sexual in any way, and they're only sexual because of what type of mind you have.
The adoption was handled in the best manner possible for children to understand. In fact, it's realistic since it shows the challenges some adopted kids face and reinforces the idea that not all families have to look like the others to be considered a true family. A lot of reviews on this site are forgetting the most important part of this film; Sherman standing up for Mr. Peabody. Sherman realized just how much Mr. Peabody has done for him and states that being called a dog would be an honor if it means being like Mr. Peabody. That drives the film's moral about how it doesn't matter what kind of family you come from; what truly matters is how their love transcends all types of bullying and negativity from outsiders.
In the end, Mr. Peabody & Sherman was a fantastic movie that every family should go see. You'll laugh, cry and awww at this heartfelt and perfect movie.