The definition I’ve heard the most is: newborn (0-3 mo.), infant (3-12ish mo, toddler (from the time they start walking to between about 2-3 years). Technically, any of them could be considered a baby.
“Toddler” describes the action of toddling, or walking in an uncoordinated way.
Skeet? Really? Lil Jon’s “Get Low” came out 22 years ago.
Now if they had said “Skibidi” that would be a different story.