My late cat Max once came racing across the garden with a string of sausages trailing behind him - presumably someone's dinner defrosting by the window
I've had mice, birds, a tiny lizard, frogs, a hare and a several baby rabbits over the years. Some I've managed to rescue and release others sadly were DOA. Current boy has 'lost' several mice and waited patiently for hours until they've thought it was safe to emerge - thankfully he's always managed to regain control eventually! Current girl wouldn't be seen dead (pun intended) with anything so gross as cat kill but loves presenting us with her own toy mousie several times a day. She makes a lot of noise announcing it's arrival too 
Has Trump completely lost what was left of his mind?
Arguments with son and I don't know what to do?
Not really a scam or fraud, but I wasn't sure where else to put it.

His best 'gift' was a mole with not a mark on it. I buried it, in the vain hope that it was merely unconscious (don't laugh) with Sam looking on bristling with displeasure.
Sadly it is their instinctive behaviour.