- The eighth book in the series introduces Seven Shep. Not Dan was intent on getting a dog to represent Mathamanimal #7. The clever way that Shep is dropped off in the jungle will have you and your kiddo laughing! A dog…in the jungle? How did he get there? Follow Seven Shep as he grows from a puppy to a 70 year old on birthday ten! Shep ages in “dog” years. By birthday ten, Monkey Moe’s new best friend might be your kiddos too! Let Shep jump off the page and into your heart! Enjoy!