This galaxy duo is known as UGC 2369. The galaxies interact, which means that their mutual attraction pulls them closer, changing their shape.
You can see thick bridges of gas dust and stars connecting the two galaxies as they pull material through the narrowing between them into space.
Interaction with others is a common occurrence in the history of most galaxies. For larger galaxies, such as the Milky Way, most of these interactions involve much smaller dwarf galaxies.
But every few billion years, more significant events can occur. For our original galaxy, the next big event will occur in about four billion years when it collides with its larger neighbor, the Andromeda galaxy. Over time, the two galaxies will probably merge into one that has been dubbed Milcomed.
Further Reading: Nasa gov