Cats are grumpy and a lot of cat parents can attest to that. However, despite their mood swings and annoying temperament, cats are loyal animals.

They demonstrate “secure attachment” that’s often seen in human infants and dogs. With this kind of attachment, cats become more relaxed whenever their humans are around- even if placed in a novel environment. This supports the idea that cats can also form deep social bonds with their humans.

As examples, here are 30 cats showing their loyalty to their favorite humans.