Cattle horns never stop growing, though the rate of growth slows dramatically after they reach adulthood. Horns continue to grow throughout the animal's life at a nearly imperceptible rate. While the most significant growth occurs in the first few years, they will continue to grow slowly for the rest of the cow's life. Initial growth: Horn buds merge with the skull bone by the time a calf is about a year old. Adult growth: After this initial rapid growth phase, the growth rate slows considerably

This greater short horned lizard seeks the perfect spot to escape the desert sun. Watch more 'Wild Canadian Weather' on CBC Gem: https://bit.ly/3hcUasO | CBC Docs

Watch: When threatened by predators, the short-horned lizard employs a unique—and terrifying—defense tactic. http://on.natgeo.com/1PPbZGO | National Geographic