@yakkoTDI When I was growing up I was a pretty avid keeper of tropical fish with multiple fish tanks, and on more than one occasion, my cat successfully went “pawfishing” in in one of my aquariums, leaving partly eaten fish remains on the floor in front of the tank.
I had a cat like that. He was eating his food, a mouse ran between his food dish and the wall (food dish was basically against the wall). He turned his head and watched where it ran to (behind the fridge). He then went back to eating and when he was done went and sat down in front of the fridge staring intently at it. The mouse did not come out that I saw.