Your Strenght score increases by 4.

Girallons mature around age 5 and can live to be 100.

any alignment

Your size is large.

Your base walking speed is 40 feet, you also have a climbing speed of 40 feet.

As a bonus action, you can move up to your speed toward a hostile creature that you can see.

You have advantage on Wisdom (Perception) checks that rely on smell.

Your long teeth are natural weapons, which you can use to make unarmed strikes. If you hit with one, you deal piercing damage equal to 1d6 + your Strength modifier instead of bludging damage for the normal unarmed strike.

You cannot use any weapons for attacks. 

You may make 5 attacks: One with your bite and four with your claws.

Your sharp claws are natural weapons, which you can use to make unarmed strikes. If you hit with it, you deal slashing damage equal to 1d6 + your Strength modifier instead of bludging damage for the normal unarmed strike.

You are Proficient in the Acrobatics, Athletics, Intimidation, Nature, Perception, Stealth, and Survival skills.

You cannot speak any languages.