Astrid and Hiccup kiss in a couple of scenes.

Stoick and Valka share a passionate kiss after not having seen each other in twenty years.

Snotlout and Fishlegs compete over Ruffnut throughout the movie, calling her "princess" and "darling".

There are several extended battle scenes. There is a fair amount of violence and implied casualties, but no gore. No blood. But there is some sword-fighting, perhaps some dragon fighting.

A dragon is killed by another dragon.

The phrase "oh my gods" is used a couple of times.

The film deals with issues such as family hardships, war, dictatorship, and poaching of animals, among others.

Compared to the first film, there are more frequent and more intense action scenes. This includes battles where casualties occur, although deaths are more implied than shown.

Some of the new dragons, particularly the massively large ones, may frighten younger children.