Mice Galaxies are a pair of interacting galaxies located about 400 million light-years away in the constellation Canes Venatici. They are named for their appearance, which resembles a pair of mice with long tails. These tails are formed by gravitational interactions that pull stars and gas from the galaxies, creating long streams of material. The larger galaxy, known as NGC 4676, is about twice the size of its companion, NGC 4676B. The interaction between the two galaxies is causing bursts of star formation, making them an interesting subject for astronomers studying galaxy evolution and the effects of gravitational forces in the universe.