How do you get a mushi monster pet

You buy any 3 plants at Main Street then go home. Go to your garden and click on the little pouch bag. This is were all of your plants are kept. Drag all 3 plants out of the bag and drag each one to one of the 3 mud heaps. Leave your garden for about a day then go back the next day. If a little alien type animal comes out from behind a tree, you have a pet. If not, then try 3 different plants and keep going. Have fun!