We have taught all our dogs to respect the cats as I know Gizmo would love to do as Streak does, but we don't let him. (he gets bopped on the head if he gets in the cat's face)
My family background is Mormon/Catholic, so our dogs were raised to respect babies and toddlers more than anything else. There were oodles of them around the place. it was always baby season...
Neither Streak nor his predecessor, Duffy, would take a cookie from a baby. They would not look away from the cookie, or any other food held by the chubby little fingers. They'd follow the thing at a distance of about four microns, as it waved back and forth. Ears alert, eyes locked in place, breathing rapid. If the baby dropped food, it never actually fell. it certainly never touched the ground. But it was safe as long as it was in the baby's hands.
Once you could walk, all bets were off. All our dogs recognized that if you were able to walk, you were able to, and could reasonably be expected to, defend your own cookie. It was one of the first lessons in betrayal in all our young lives, figuring out that Duffy or Streak or Heather or Scamp, or Scamp II would take your cookie if you were the least bit inattentive...
The problem was those bouncy chairs, the ones that would hold a baby up so it would sort of pretend-walk around the place? Duffy had no problem, really. If you were walking in one of those things you were walking and that's all there was to it. Just be glad he left you all your fingers.
Streak recognized that babies that ONLY walked in the walker weren't really walkers. On the other hand, if they put their cookie down on the little shelf in front of them, they weren't actually holding it, either. So he'd come up on his hind paws to eat food out of the tray.
But quick. Because he was pretty sure that it was not technically against the rules, but he was also sure he'd be yelled at by SOME body. Probably a case of entrapment.
I remember watching him go to yank my cousin's cookie out of that tray, and just as his front paws rested on the walker, grandma saw and shouted 'Streak!' and he shoved off and ran to hide, and the shoving made the walker roll backwards across the room to hit the stereo which knocked a planter over and my cousin, Martin, was covered with soil and bits of flowers. After that Streak AND Martin were both afraid of the walker and would crawl away and hide if anyone brought it out....