Wemic's are great. What book are they published in? I have not seen them on D&D Beyond, and I own everything there.
Complete book of Humanoids, 2E. I don't think I've seen them as PCs in any edition since then, but it shouldn't be hard to stat them up.
A quick hot take:
Ability Score Increase. You increase your Strength by 2 and your Dexterity by 1.
Age. Wemics generally live harsh, somewhat brutal lives. They mature at age 13 and usually live around 40 years, though there are those who have lived 80 years or more.
Size. Wemics grow to 10 feet long, reaching heights of six to seven feet when standing erect. They easily weigh over 400 lbs. Your size is Large, but you use medium-sized weapons and armor.*
Speed. Your base walking speed is 30 feet.
Leap. Wemics triple the distance they can cover when jumping.
Claws. As a bonus action, you can use your front claws to make a melee weapon attack, using strength or dexterity to hit. On a hit, you deal 2d4 slashing damage.
Natural Hide. When unarmored, your base AC is 14.
Languages. You speak the Wemic language, which consists of gruff growls, posturing, and rumbling words. Most wemic traditions are oral, though they do on occasion make permanent records with pictographs and/or carved beads. You can also speak, read, and write Common.
* Alternately, treat the Wemic as Medium-sized, but treat it as large for calculating carrying capacity and the weight they can push or drag.