Pokémon Sleep has announced that Vulpix and Ninetales will begin appearing at the Greengrass Isle and Taupe Hollow as of May 6th, 2024, at 3:00 p.m.

New Arrivals: Vulpix and Ninetales

Vulpix and Ninetales have been spotted near certain areas—maybe this is thanks to the sleep research you’ve all been conducting! It may be possible to encounter them during sleep research soon. We hope you’re looking forward to it!

Vulpix and Ninetales Details

Appearing Beginning: May 6, 2024, at 3:00 p.m.
Note: Vulpix Incense can be used starting from the date and time above.
Appearing at: Greengrass Isle and Taupe Hollow

Sleep Types:
Vulpix: Snoozing
Ninetales: Snoozing

Source: https://www.pokemonsleep.net/en/news/5675/