Whoever coined the term 'man's best friend' should have observed at how dogs behave around babies. They're gentle, sweet and responsible brothers and sisters to their human siblings. Brutus, for instance, becomes the most doting brother just for Kayden, the baby of the Michalek family.

Brutus is a 3-year-old Bullmastiff living in Northern California with his family, the Michaleks. He is technically the family's first baby, according to Bonnie Michalek. Despite his tough facial expression, Brutus is actually a very warm and playful dog, but Bonnie and her husband were worried at how Brutus would react in case they got pregnant with their first child.

Brutus loves kids, he also plays with them at the park and always accepts kids' attentions whenever he meets them, but he's also used to being the only child, so they really had no idea how he'd take the new family asset.

Brutus actually sensed Bonnie's pregnancy it before the couple even had an idea. On nights when Bonnie's husband was at work, Brutus would hot leave her side. No matter how Bonnie made his crate comfortable or bribed Brutus with treats, he would not stay inside the crate until her husband came home. Nine months later, when Bonnie finally gave birth to Kayden, the Michaleks made sure that Brutus would be part of it all.