I was going to say the same. Our cats love a good, crunchy fly when they can catch it. They’re both big Maine Coons, so they wreck the house — literally — trying to catch them.
My cat will eat the occasional fly or other bug, as well.
My daughter recently moved to FL, and they have a screened in lanai, so her cats can now “go outside”, and have caught some tiny lizards, but just seem to play with them so far.