Bowser The Hound in "Reddy's Forlorn Chance"

By and by it was wide enough for him to get his whole paw in. Then it became wide enough for him to get his head half in. After this, all he had to do was to force himself through, for as he pushed and shoved, the little door opened. He was inside at last! There was a chance, just a forlorn chance, that he might be able to escape the notice of Farmer Brown's boy in
the morning.