How to unlock every hat at the Hat Mouse in Stardew Valley

There is an adorable NPC in Stardew Valley called the Hat Mouse. He lives in the Abandoned House to the south of Cindersap Forest and, as his name suggests, he sells hats. However, his stock grows over the course of the game and each hat has a specific unlock trigger. 

The Hat Mouse will send you a letter the morning after you complete your first achievement in game, so it makes sense that each of the hats he goes on to sell only unlocks after you’ve earned its accompanying achievement. 

There are some exceptions to this, such as the hats that are won by coming first in seasonal events. 

How to unlock every hat with the Hat Mouse in Stardew Valley

Whenever you get a new achievement in Stardew Valley, make sure to visit the Hat Mouse to see what new and fun accessories he has on offer. Every hat sells for the same price of 1,000 Gold. 

There are also three other hats which become available at the Hat Mouse once the criteria is met:

• Straw Hat
  • Win the Egg Hunt at the Egg Festival
• Sailor’s Cap
  • Win the Fishing Competition at the Festival of Ice
• Elegant Turban
  • Earn all other achievements

How to put hats on Cats and Dogs in Stardew Valley

All of the Hat Mouse’s hats, as well as any other that can be found in Stardew Valley can be placed on Cats and Dogs. 

To do this, place the hat into your inventory and select it, before right clicking on your pet. I’d advise that you don’t do this near water, because you might lose any hat that they were already wearing.