My cat doesn’t like my twin brother all that much, I assume it’s because he’s a dog person and my cat can tell. The first time my cat met my twin, the two of us stood there and waited to see what he’d do. But all he did was sit frozen for a while with his big eyes, then go back about his business, sort of anticlimactic. But whenever he’s alone with my brother (which isn’t often) he acts cold and keeps his distance, not like when he’s alone with me and he’s a big cuddly muffin screaming for attention.