I highly recommend the Skippyjon Jones book series by Judith Byron Schachner for young children. These book series target children from kindergarten to third grade (in an English speaking environment). I like to read them to my kids, one in preschool (roughly over 3 years old) and one in first grade (close to seven years old). It is about a hyperactive Hispanic siamese cat, Skippyjon Jone, which has ears too big for his head and a head too big for his body. He has a fantastic imagination, too wild for his mummy to handle. The stories are hilarious. They often made our kids laugh. Apart from being hilarious, the books are also a good practice material for my son to brush up his Spanish vocabulary.
Here is Skippyjon Jones' website: http://www.skippyjonjones.com/
These are the books I have read to my kids.
1. Skippyjon Jones
2. Skippyjon Jones in the Dog House
3. Skippyjon Jones and the Big Bones
4. Skippyjon Jones in Mummy Trouble
I like "Skippyjon Jones" in Mummy Trouble. Mummy can mean "木乃伊" or "媽咪" (Mummy is British English)