Hmm... This level is kind of hard to explain...I'll do my best...
When you come out, first collect the coins. Then let the chompers loose by going on the ice path that leads you to push the box onto the button.
Slide out of there, then go down to the bottom left corner, and push the box to reveal a button. Step off of it. That will leave a chomper stuck on a button, as well as a box, on another button beside it. Then lure the second chomper down and around to below the ice at the bottom (with another set of buttons). He should be on the green button and you should be two spaces above him. Go right to send a box (and you) onto the button beside the chomper. Now you should have two more buttons pressed.
Finally, step on the blue switch in the near-bottom-left. Lure the chomper out, and down and around to the aqua switch, leaving the chomper on it.
Now go in each of the dog houses.
Hope this helps
I'll leave the water puzzle for u to figure out.
