"[first lines] Ha-ha-ha! That's my boy! [to Tyke] You know, son, now that you're grown up, it's time we have a heart to heart talk about the facts of life. First of all, you're a dog. And there's three things are dogs gonna know how to do. First: a dog's gonna know how to be man's best friend. That comes in two easy positions: the begging position with the big sad, soulful eyes, and the lyin' at the master's feet position also with the big sad, soulful eyes. Now the second thing that dog has to know is to how to bury bones. [buries his bone] Why? I don't know. I can never find them, after I bury them. [laughs] But that's what dogs are supposed to do. Third, and most important: all dogs gonna know how to chase cats. Which happens to be my specialty. Now, if we had a cat... [As if on cue, Tom and Jerry appear on the scene with their usual cat-and-mouse antics] What a coincidence. Watch me. This always scares them out of their skin. Shh."
January 1, 1970
https://en.wikiquote.org/wiki/That's_My_Pup!