Many cat owners have similar experiences: their own cats running outdoors to play and coming home when they've had enough fun. But they didn't always come back alone. There might be a bug or the corpse of a small animal in their mouths, like a dragonfly, butterfly, rat, or lizard, placing them at the feet of their owners like they were presenting a gift.
Even indoor cats that never went out had that same kind of hunting instinct. They would use any and all opportunities to brush up on their hunting skills and then gift the prey to their loving owners. For example—cockroaches.
Even with houses that didn't have cockroaches, those perceptive cat owners would also notice that after getting their cats, the number of mosquitoes indoors would also greatly be reduced. That was because the cats had used mosquitoes as their practice targets. They would also present the mosquitoes to their owners as gifts, but due to the small size, most of them wouldn't notice it.
