Squirrel appreciation day is celebrated on January 21 every year in the United States. A squirrel is a tree-dwelling rodent that is becoming endangered in some areas. Because of all the trees being cut down, squirrels are losing their homes. This only makes them look for shelter in our homes. It can be a pain. I don’t know why we are appreciating them, but there is such a day. Hard to believe, but it is.