why is my 18 month old giggles often without any cause. she all of a sudden will burst into laughter without any reason for few secs. is this normal?

A. That’s very normal behaviour sometimes we cannot figure out the correct reason behind it but this is considered very normal and common with kids because you know at this age they are into their own zone only and sometimes they can react to anything which is running into their mind or anything for that matter which is difficult to understand but yes this is completely normal that’s what I can tell you