On Ravelry it says that there is an Alan Dart pattern for Kipper the Dog, but it was in "Women's Weekly, April 20, 1999". Maybe you can find that magazine on Ebay. Here's some back issues that you may possibly find it, too.
http://www.crazyaboutmagazines.com/o...ck-Issues.html
Or maybe since kids that age aren't too picky maybe you could turn another pattern into a "Kipper-like" dog if you used the right colors?
http://www.etsy.com/listing/13017241...-the-puppy-pdf
http://www.ravelry.com/patterns/libr...and-beach-ball
http://www.ravelry.com/patterns/libr...y-the-labrador
http://www.ravelry.com/patterns/library/puppy-2