The Snadger is an animal couple consisting of a European Badger and a snake. The couple was named Snadger by Mabel Pines.
The Badger and the snake first appeared in the season 2 episode The Love God.
When Mabel and the Love God are in the diner, Mabel sees a Badger and a Snake fighting outside. The snake hissing at the badger and the badger growling defensively at the snake.
Mabel asks the Love God if he can make anyone into a couple and if he can prove it to make the fighting animals love each other. The Love God proves he is able to do this by using his Love potions and turns the animals into a loving couple. The snake hughs the badger and they walk off together. Mabel enthusiastically renames the couple a Snadger.
They later can be seen, still together, in Weirdmageddon (event) fleeing of the terror caused by Bill Cipher and later when they join all the other creatures joining Dipper and Mabel to defeat Bill.
The snake and the badger remain a couple in the rest of the series.
The Badger is portraited as a European Badger. A species of badgers who are common in Europe and the United Kingdom, but are not native in America. Therefore the badger shouldn't be appear in Gravity Falls, Oregon.