Lycanthropes age the same as any other member of their Origin Race.

A lycanthrope can either resist its curse or embrace it. By resisting the curse, a lycanthrope retains its normal alignment and personality of their Origin Race. Lycanthrope that embraces their bestial natures succumb to bloodlust, becoming evil, opportunistic creatures that prey on the weak.

Your Humanoid, Hybrid and Beast form sizes are based on your origin race or species of beast.

Your base walking speed is 30 feet.

Your humanoid form is a perfect reflection of your Origin Race. Only your yellow, beastly eyes will give you away. You gain racial traits, additional benefits, or proficiencies depending on your Origin Race. There are five Origin Race's to choose from: Human, Half-Elf, Half-Orc, Goliath, and Tiefling.

There are four different strains of the Lycanthropy curse which you can contract, each with their own varying traits. You can only be infected with one strain. The four strains of lycanthropy include: werewolf, weretiger, werebear, and wererat. Choose a strain for your lycanthrope.

You can use an action to polymorph into a Hybrid Form or into a Beast Form, or back into your Humanoid Form. If your Hybrid form is the same size as your Humanoid form, you continue to wear any items equipped prior to transforming. Your Hybrid Form can wield weapons and shields. When you transform into your beast form, you automatically drop any equipped or carried items. 

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.

Whilst infected with one strain of Lycanthropy, you are considered immune to receiving other forms of the curse, automatically succeeding on your Constitution Saving Throw when cursed. You have advantage on your Saving Throws against other types of Curses. Remove Curse has no effect on your Lycanthropy.

If there is a Full Moon, you are forced into your Hybrid form and are unable to transform into your Humanoid or Beast form for the duration of the lunar phase. You also have disadvantage on Wisdom Saving Throws during this period.