This is a story of very different creatures working together as a team to achieve goals. There are also lessons in forgiveness and finding out what's really important; that is, being with the ones we love and the ones who love us. On the other hand, much of the humor comes from either engaging in or coming very close to engaging in stereotypes of ethnicity, region, and lifestyle.
Rabbits are used like snowballs in a snowball fight. Scene of a dog getting electrocuted. Cartoonish pratfall violence: animals falling and losing their antlers, a gas station explodes.
For a movie that starts with an animal wedding, there is very little romance. Lots of punny double entendre jokes about "racks" and "nuts." Animal character makes reference to "grown-up time." One dog says to another dog, "Your doghouse or mine?" A gas station attendant's rear end crack is exposed.
Animal almost says "pansy-ass" before he's stopped from saying it. Frequent double entendre: jokes revolving around use of the word "nuts," and phrases like "grabbed Mr. Weenie" (the name of the dog). A flirtatious dog says to another dog, "Your doghouse or mine?" When Elliot gets new antlers, there are jokes concerning his "new rack."