Either increase one of your ability scores by 2 and another by 1, or increase three different ability scores by 1 each.

Didelphs mature after their 10th year, and while legends say they can live for centuries, the oldest know was killed in the middle of his second.

One does not live as a scavenger by strict morals, and as such Didelphs are rarely lawful. However, though their frequent ideals of self-preservation can be seen as selfish, they often put their families first, found or otherwise. As such, most are considered good creatures at heart.

Most Didelphs are between 3 and 5 feet tall, with tails often around 5 to 6 feet long regardless, and weigh anywhere from 40 to 100 lbs. Discuss with your DM whether you are small or medium.

A nimble race built for arboreal living, you have a base walking speed of 30ft, and a climb speed of 20 feet as long as your tail is free.

Didelphs were mostly nocturnal until colonization; as such 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.

Due to your sharp teeth, you have an improved unarmed strike. When you hit with a bite, you deal piercing damage equal to 1d4 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.

You have a naked, segmented, prehensile tail, ordinarily used for climbing by grasping ledges. Your tail has a reach of 5 feet, and it can lift a number of pounds equal to five times your Strength score plus your body-weight. You can use it to do the following simple tasks: lift, drop, or hold an object or a creature; open or close a door or a container; or grapple someone. The GM might allow other simple tasks to be added to that list of options. Your tail can’t wield weapons or shields or do anything that requires manual precision, such as using tools or magic items or performing the somatic components of a spell.

Didelphs are humble tricksters, and often seen as cowards for their willingness to hide in plain sight from their aggressors. As a reaction, when you would take damage, be forced to make a save against the frightened condition, or a trigger of your choice agreed upon by your DM, you may fall prone. Any creature that witnesses this fall must succeed (Insight) or Wisdom (Medicine) check (DC 10 + Proficiency Mod + Charisma Mod) or presume you dead. This check is made at disadvantage if they have not witnessed you attempt this before. If the trigger was against the frightened condition, make your saving throw with advantage. Due to nature of your performance, any attempt to target you with an attack or harmful effect must first succeed the check against your Playing Possum DC or choose a new target if available. You may use this ability once per short or long rest.

At 3rd level, once per long rest you may cast Feign Death targeting yourself without use of components.

Didelphs can eat anything organic and some things inorganic, and yet famously never get sick, nor does venom affect them. You're resistant to poison damage, have advantage on saves against being poisoned.

You can speak Common and Goblin, and can communicate simple messages to other Didelph via DTS (Didelph Tail Sign)