Buddy is very good at seeking out a bug or spider - - - then he just sits there, fascinated. I know he has "prey" when over time, his head swivels and he crouches lower and lower to get a good look at it.
If I have anything to say, I grab it and it's immediately promoted to "bug heaven".
Now, house flies are another story. He will leap and pirouette, smacking the window with his sizable paws til he wins.
I try to get the fly before Buddy does - he eats them. They don't go down easy and he chokes and gags his way til he's successful. I sit choking and gagging watching - mercy!