“Wolves don’t bark — they puff.” What you’re hearing here isn’t a bark like a dog’s. It’s a subtle, breathy alert sound — often called a puff — and it’s much closer to how wild wolves communicate. In the wild, wolves almost never bark repeatedly. Loud barking would give away their location to rival packs or prey, and that could get them killed. Instead, wolves evolved quiet, efficient communication — short alarm sounds, body language, eye contact, and breathy warning vocalisations like this. Bar

813K views · 269 reactions | A researcher uncovers 30,000-year-old skulls from Europe, which appear to be halfway between those of wolves and domestic canines. But do the skulls actually belong to the ancestors of today's dogs? Stream "Dog Tales" on the PBS app or online to learn more: https://to.pbs.org/390x2sf | NOVA l PBS | Facebook