Taidums are a species created by Irix, originally as a VR avatar.
They are short, covered in fur, have little elbow_fins and an axolotl_tail, though many use a fluffy_tail instead. They have big eyes and a snout that resembles one of a dog.

If you played VRChat for a bit, chances are you've seen one.

"The Taidums are a fantasy creature that are a mix of different animals and come in all shapes and sizes. They love banana bread and jokes involving cows. Some are great swimmers and dancers, and others are loaf, just loaf."

quote from Irix on the Gumroad listing for the avatar

See also
Taidum Avatar Gumroad listing: https://irix.gumroad.com/l/DpDFe