Once you get to the "Carnival" level, you can easily go straight through the portal
and to the next level. However, to get the extra credit by finding the bones and 
puppies, it might take awhile. To trap Jasper, you need to talk to the turtle (Shelby)
near the level entrance. He will tell you that he has seen Jasper. You must go near 
the portal and find the dunk tank. The puppy (Domino or Oddball) will say something 
similar to "I wonder if Jasper can swim...", then Jasper will be around the area of 
where Shelby was located. Lead him to the dunk tank and use the dunk tank ticket 
to squirt. Hit the target and dunk Jasper.