Why do humans lie, even when we know it's wrong—and can our dogs actually tell? In this episode of Explain It Like I’m 5, Alex breaks down the psychology and science of lying: why people tell white lies, fibs, and full-on whoppers; what goes on in your brain when you deceive someone; and how lying starts in childhood. Plus, we dig into the big question every dog owner secretly asks, can dogs detect dishonesty?

From body language cues and brain chemistry to ancient trickster myths and adorable canine lie detectors, this episode uncovers the truth about... well, untruths. Whether you're curious about human behavior, social psychology, or just want to know why your dog gives you that look when you say “we’re going to the park,” this episode has the answers, no lie.