Your dog can smell your feelings.

Your pup can pick up on subtle changes in your scent, which can help him figure out how you are feeling — such as by smelling your perspiration when you become nervous or fearful. It’s also likely how dogs can detect certain diseases or know that a household member is pregnant.

Dogs only have sweat glands in their paws.

More specifically, they are found between their paw pads. That’s why it can help to wet the bottom of their feet on a hot day, and it’s also why dogs rely on panting as a means of cooling down.

Your dog does have a sense of time — and misses you when you’re gone.

If you think your dog knows when it’s time for dinner or a walk, you’re right! Dogs pick up on our routines and habits, and they also sense how much time has passed. One study showed how dogs responded differently to their owners being gone for different lengths of time.

Your dog’s whiskers help him “see” in the dark.

Okay, it’s not quite night-vision or a super power, but those whiskers pick up on even subtle changes in air currents, providing your pup with information about the size, shape, and speed of things nearby. This allows your dog to better sense approaching dangers or prey — even at night.