Great for kids used to this kind of humor...mine are!
My 4 and 6 year old like this movie a lot. We all enjoyed the first movie and the second is just as cute. The neurotic poodle, Fifi, and the Scottish squirrel have some attitude I'm not too thrilled about. But I make sure to point out that they aren't being very nice and my kids completely agree. I like the fact that Weenie's friends risk a lot to go and "save" him from the humans. Our family likes it and if your kids are used to this kind of humor, I'd highly recommend it. It might be a little much for the Teletubbie/Sesame Street only families, though.