It looked like it was probably from the 30s-40s. It featured a black and white housecat who is being driven crazy by 2 yapping puppies who are pets in the same household. The cat opens a door so the puppies escape into the street.At first the cat is happy, but then it feels bad when it realizes how sad it's owner is and that the puppies might get killed.The cat sets off to find them and discovers them cowering in a junk yard surrounded by a bunch of big mean dogs who are about to attack. The cat beats up all the mean dogs and carries the pups home and in the last seen it is singing them to sleep. Any idea what cartoon this is?