Baymax glances down at where he was poked for a moment, but otherwise doesn't react. He seems more interested in the sudden appearance of the vine itself, tilting his head curiously at it and reaching out to touch it with one finger if Bulbasaur will allow it.

Upon being informed of Bulbasaur's youth, Baymax quietly adds that fact to his scan of the creature. Just in case he runs across any older specimens, since it'd be useful for comparison. "Proper socialization is important to the healthy development of any young creature," he says. "Are there any activities that Bulbasaur seems to enjoy? Or ways of expressing affection that he prefers?" Best to teach the little one that meeting new people can be a fun thing.