How do dogs have sex and what are the key differences in their mating behavior compared to other animals?

Dogs have sex through a process called mating, where the male dog mounts the female dog and they engage in intercourse. One key difference in their mating behavior compared to other animals is that dogs often exhibit a "tie" during mating, where the male's penis swells and becomes locked inside the female for a period of time. This helps ensure successful fertilization. Additionally, dogs may engage in courtship behaviors such as sniffing, licking, and vocalizations before mating.