Animation will possibly always be inextricably linked with and thought of as family-friendly content. Even though it’s a medium of storytelling, animation continues to be widely perceived as a genre. As a result, it’s simply considered a children’s genre by most, even though the best R-rated animated films demonstrate that there’s nothing inherently child-friendly about animation. Horror as a genre, on the other hand, barring horror comedy movies which are hilarious and terrifying, is largely considered to be an adult genre, exploring adult themes and featuring visuals inappropriate for children.

https://screenrant.com/animated-horror-movies-perfect-family-list/