Weird sound effect after shooting dino

[Emily_Wood]

So I was shooting a Koolasuchus, and when I finished it rang a bell, ding ding. After that it said round over.

I am so confused, why did it say that??

[Puttytat]

Finish her!!!

[Thoughtfulraptor]

Defeated!!

[iRex]

Because that koolasuchus is cool!