It sure is handy having Brian the Brain for a best friend—how else would Josh have a shot at first prize in the science fair and winning tickets to Wonderland Lake? But when Brian plans to hypnotize his dog, Arfie, into thinking he’s a cat, Josh knows he can say goodbye to Wonderland Lake—this scheme will never work. The next thing he knows, Josh is climbing trees and craving raw fish sandwiches. What’s going on? Will the real science project please meow?

Believe it or not–and you better believe it–Josh’s dog Arful can talk! This is very useful to Josh and his pals who want to win the school talent contest. First the boys have to find out what the girls are planning for the contest. That’s when they send Arful to get an earful by spying on the girls. Just wait until show time to see what Arful the spy uncovers.

When Brian takes care of the third-grade class' pet chicken during Christmas vacation, Arful, his talking dog, has his paws full watching over it.