There is basically nothing, except for a little bit of romance in a few episodes.

The only thing that gets decapitated is Oscar's tail, but he puts it back on, or grows it back. No blood, nothing disturbing.

There is no swearing; there is no talking in it in general.

There is no drinking, drugs, or smoking.

It's a slapstick comedy, so there's obviously some reasonable violence in it, like hitting each other with cactuses, being squished by rocks, being burned by fire, but nothing too disturbing. There is one episode about a chicken eating radiation, and turning into a big, aggressive, green chicken and nearly beats the Oscar and his crew. This episode might be disturbing to younger children