Quick explanation for the chalico's attacks:

Melee attack #1: The chalico swipes at you with its claws for 36 damage

Melee attack #2: The chalico headbutts/bites you for 32 damage

The chalico will also repeatedly use these 2 melee attacks in alternating order

Mud throw: The chalico scoops mud or snow if you are in a snowy area from the ground then throws it at you and if it hits you it does 10 damage then gives you an effect that decreases your health and increases your torpidity and prevents any heals from working until the effect wears off

Rock throw: The chalico picks up a boulder that it spawned from thin air then throws it (tamed chalicos only can use this) and if it hits a living creature it will deal 100 damage, this attack can also damage stone at a 1x multiplier so it will do 100 damage.