Thats wrong, cats exposing their bellies to humans is mostly a sign of trust, as thats when theyre at their most vulnerable However cats, lying on their side or back, can also be part of defensive aggression - Not because they can get all their claws out, but because they can hold prey or enemies in place with their front legs and teeth, while "bunny-kicking" with their hind legs, sounds cute, right? But its the most lethal move a cat does, as it can basically scratch anything open very quickly using their strongest muscles Now cats arent stupid, they know this move doesnt work against humans, dogs, pretty much anything bigger. So when they show their belly to a human its usually a sign of trust, but can also be playful aggression (same thing as defensive aggression but without claws + less force behind it, usually) - A cat would run away from you if it doesnt trust you, before it exposes its belly to actually defend against you, simply because youre a much much larger predator than the cat
Cuando pequeño yo a mi abuela le encantaban los gatos… pero los mantenía siempre en el patio pues no les permitía entrar a la casa. Pues ella murió y los felinos se tomaron la casa😅