One Ability of your choice increases by 2 and one other by 1.

Chimeras are often born fully matured, though it is possible that a Chimera be born by natural means, in which case they usually mature at around 10 years of age and their lifespan entirely depends on their racial components.

Your base walking speed is 35 feet.

Chimeras tend to be either very chaotic or very lawful, though a Chimera can be of any alignment depending on their surroundings.

Chimeras differ vastly in their height and build, but their size is always considered Medium.

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

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.

You have two claws and one bite which are melee weapons with which you are proficient. The claws are light weapons that deal 1d6 slashing damage. When you attack with one claw, you can attack with the other as a bonus action, as though you were two weapon fighting. Your bite deals 1d8 piercing damage.

Due to being made of various races, when you have an Ability Score Improvement and choose to take a feat, you may take a racial feat from any race.

You are able to pick three features from the following list, you may select another one at level 6, 12, and 17.

Acute Senses
You gain proficiency in Perception and Investigation and your passive perception increases by your Wisdom modifier.

Aquatic Adaptation
You have gills and webbed appendages or fins, you have a swimming speed equal to your walking speed, and you can breathe air and water.

Blindsighted
You have a Blindsight of 10 feet.

Bestial Resilience
When you are reduced to 0 hit points but not killed outright, you can drop to 1 hit point instead. You can't use this feature again until you finish a long rest.

Camouflage
You are able to alter your appearance in order to blend in with your surroundings, as a bonus action you give yourself advantage on a Stealth check.

Critter
You are size Small, you add +2 to your AC and +5 to your Stealth. Cannot be used with Massive.

Environmental Resistance
You gain resistance to a single elemental damage type and don't suffer from extreme cold or heat.

Extreme Agility
Your reflexes and agility allow you to move with a burst of speed. When you move on your turn in combat, you can double your speed until the end of the turn. Once you use this trait, you can't use it again until you move 0 feet on one of your turns.

Hardened Exterior
Your exterior is made up of a chitinous material, or you possess a large shell, AC is equal to 13+ you Dexterity modifier.

Massive
You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift. Cannot be used with Critter.

Nimble
You can take the Disengage, Dodge, or Hide action as a bonus action on each of your turns.

Subterranean
Your claws are more powerful than normal, you gain a burrow speed of 15 feet and a climbing speed equal to your walking speed. 

Venomous
You are able to cast Poison Spray as a biological ability and you are immune to poison damage and the poisoned condition.

Wall Crawler
You can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Wings
You have a set of wings which give you a flying speed of 20 feet which increases to 30 feet at level 10.