Your Strength score increases by 2 and your Dexterity score increases by 1.

Gnolls mature at about 10 years of age, and can live up to 55 years. However, due to their often violent lives, few Gnolls actually make it to the maximum lifespan.

Gnolls under Yeenoghu’s influence tend to be chaotic or neutral evil, while gnolls integrated into other communities have a broader set of morals, usually erring on the chaotic side of things.

Gnolls typically range anywhere from 6 1/2 feet, to 7 1/2 feet. Your size is Medium.

Your base walking speed is 30 feet.

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Your bite attack counts as a melee weapon attack that deals 1d6 piercing damage plus your Strength modifier, and in addition, once a day you can make a particularly toxic Septic Bite. 
When you make this bite attack your target must roll a Constitution saving throw against DC 15 or suffer an additional 1d8 Poison damage. 
You also have resistance to the Poisoned condition and Poison damage.

 Life in the wild has prepared gnolls to approach their surroundings with confidence. Gain Proficiency in Survival or Intimidation.

You can speak, read, and write Common and one additional language of your choice

You begin cackling maniacally at a target creature that you can see and is within range. As a result, this creature perceives everything as hysterically humorous and is compelled to drop into fits of laughter if affected by the ability. The target must succeed on a Wisdom save or fall to a prone position, becoming incapacitated for the duration. A creature with an Intelligence score of 4 or lower is not affected. The saving throw is based upon the user's Charisma modifier. (8 + Charisma Mod + Proficiency bonus) Requires concentration.

At the end of each of its turns, and each time the creature takes damage, the target can make another Wisdom save. The target has advantage on the saving throw if it's triggered by damage. On a successful saving throw, the effect ends.

Whether or not the ability is successful, it is expended and can only be regained by completing a long rest.

Once a day you can make a particularly toxic Septic Bite. 

When you make a bite attack your target must roll a Constitution saving throw against 8 + your proficiency + your Constitution modifier or suffer an additional 1d8 Poison damage. 

You also have resistance to the Poisoned condition and Poison damage.