Learning how to walk was a harrowing experience for all parties involved. Disco's relatively long and spindly mule-legs led to many tumbles onto his nose, for several months until he finally figured it out. Luckily, he didn't seem to mind at all, just wriggling and flailing his long legs until he could get into position to try again. Pinkie, on the other hand, had to spend all that time with a tail that would twitch-twitch-twitch -meaning she had to jump up and check if Disco was just trying to take more than three steps, or if he'd somehow managed to get on top of the closet again.

(How did he always manage to get up there? He couldn't walk or fly yet?? It was a bit annoying to have him just appea-…
…
…Pinkie figures she owes some of her friends an apology)

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At first I though that the Pinkie Sense might be a helpful tool for Pinkie in raising Disco; easier to keep him safe and out of trouble if you can tell if he's about to be hit by an open door, about to be stung by bees, or even just knowing that you'll need to have a bath ready for when he gets home etc. But then I remebered that Pinkie's something is gonna fall-twitch could sense that Twilight was about to fall. Which… does not bode well for having a toddler in the house -is it twitching 'cause he's gonna flop on his face again, or is he in actual danger? Better get up again and check, just to be safe.

Though, looking at the episode again, Pinkie only twitches because Twilight's falling into a ditch. So I'm not sure if it would pick up someone just stumbling over their own hooves? Eh, it's more funny, so in this universe it does.