When did everyone's baby's start laughing?! My sons almost 4 months, is this to soon?

Uhg, he screeches like a dinosaur but he doesn't full on laugh yet 😭

6 weeks

Mine started laughing around 3 months. it isn't too soonn.

Full on laughing at 3 months tho.

My son started smiling at 4 weeks, and laughing at 8.