One character wears an outfit that exposes her midriff and belly in a scene

Snowbell (out of nowhere) jumps on a photo stand and grabs Stuart with his mouth. His tail is seen wiggling from the outside. Snowbell spits him out unharmed.

When Snowbell chases Stuart around the house, he climbs on a shirt, Snowbell climbs on the ironing board which makes the iron board to flip and Stuart flies, lands on the wall, slips, and lands on the top of a bin. Snowbell jumps, but Stuart jumps on the pedal which makes the bin to open and Snowbell jumps in. Not all violent, all slapstick.

No violence, but mostly relies on Stuart being in danger sometimes.

During a miniature sailboat race, a mean kid pilots his remote-controlled boat into and over other contestants boats, damaging or destroying them. George then tackles this mean kid after he calls Stuart a stupid rat. The mean kid gets a wedgie and bruising on his eyes.

Smoky was about to kill Snowbell from behind, but Stuart saves him.

There is use of "Damm" and "Hell" in the film's climax.

Some name calling and bullying (i.e. "pickle head", "jerk," "stupid").

None

Suspenseful music plays when Snowbell attempts to eat Stuart (we see Stuart's tail dangling outside Snowbell's mouth). Luckily, Mr. and Mrs. Little are quick enough to order Snowbell to spit Stuart out immediately (which Snowbell ends up doing). Snowbell is then given a stern warning by Mr. and Mrs. Little not to eat Stuart or be put outside as a punishment.

Snowbell's introduction can be jarring, as he comes in the form of a jumpscare..

There are intense scenes where Stuart is in danger (almost drowning in the washing machine, nearly going over a waterfall in the sewerage system, etc.) but he turns up okay.