The Jetsons season 1 episode 4
The Coming of Astro
Jane and the kids want a dog for personal protection, George doesn't believe in that but wants to keep everyone happy. To George the answer is an apartment approved electronic dog, one of those nuclear powered trouble free dogs: Electronimo! At the same moment the rest of the family found a biological dog. A contest should point out the superior dog. Astro proves to be the superior dog when he unwittingly tackles a burglar terrorizing the apartment building.