How old is a baby?

Answer 1

The term infant derives from the latin word infans, meaning "unable to speak or speechless" It is typically applied to children between the ages of 1 month and 12 months; however, definitions vary between birth and 3 years of age. After that they are called a Toddler.

Answer 2

Infants are the kids of the age from the born time to eight to nine months of age.

In particular, Infants are the kids that are before the toddler stage.

Answer 3

Up to 18 months then they're toddlers