Also songbirds, reptiles, basically anything small enough for them to kill.

Wait that’s a thing?!

No, but I don’t wait for the beeping to stop.

Because cats are a godawful menace to local small vertebrate populations.

“Bug” is a scientific word that refers to members of the sub-order Heteroptera. See assassin bugs, leaf-footed bugs, etc.

But yeah language is fluid and most people call any old arthropod a bug.