This is remixed from Solidos3D's Dachshund keychain: thingiverse.com/thing:1808764
The story: Not really much of a remix, but I scaled up the model to a bit over 150% of the original and flipped it over.
This is now much more appropriate a size for a keychain in my opinion, and - perhaps more importantly - it's printable properly with a standard 0.4mm nozzle. The original was too small to print right on most machines.
Notes: Print without skirt or brim.