Animals communicate with members of their own species and other species. They do this all the time to attract mates, to form social bonds, and to warn off predators. For instance, many male birds use their colorful    41    and feathers to attract female birds. Bees return to the hive to do a wiggling dance   42   shows other bees where the food is located. To scare off predators, some poisonous frogs make use of their brightly colored skin and the blowfish swallow water to expand to twice their   43   . Moreover, male and female mockingbirds copy the calls of other bird species and use complicated songs to attract mates. Baboons groom each other’s fur   44   so as to form close bonds with other members in their group. Amazingly, some animals,   45   mountain lions, use scent from their glands to mark their territories. Despite our advanced technology, we are just beginning to catch a glimpse of how animals really communicate.