An animated GIF of 2 bells dodging

What is happening?

This is what happens when two change ringing bells "dodge". One bell rings before another, then the next time they strike the first bell strikes after the second. What you would hear is "ding" "dong" then about 2 seconds later you'd hear "dong" "ding". Then another 2 seconds later you'd hear "ding" "dong".

This graphic shows two bells dodging continually - which is uncommon in normal change ringing. Usually two bells might dodge with each other once or twice, and then find another bell to swap or dodge with. More protracted dodging can occur, but it is unusual.