Grey Mouse

The Grey Mouse is one of the quieter critters in the Grow a Garden pet pool, and the database row reflects that: it ships with no recorded passive ability, no listed egg source, and no hatch percentage. That blank sheet is itself the most honest verdict you can give, so treat the entry as a small, unflashy companion rather than an engine for your farm economy.

In practical terms, a pet that lacks a documented ability does not move the needle on the levers that decide farming output. It will not raise mutation chance, will not shrink fruit growth timers, and will not boost sell value the way the meta-defining pets do. If you already own one, it is a perfectly fine cosmetic on your plot or a low-stakes filler while you build toward stronger picks.

Should it earn a slot on a serious team? Honestly, no. The active pet rotation is precious, and every chair you give to a passive-less mouse is a chair denied to a Bee, a Raccoon, or a Dragonfly that pays you back every minute. Keep the Grey Mouse as a collection check-mark, and graduate to ability-bearing pets the moment you can hatch or trade for them.