Animals communicate in different ways., Dogs can recognize their owners., Scientists discover new facts every year., Researchers observe animal behavior., Dolphins respond to sounds and whistles., Some animals can learn new skills., Many dogs understand simple commands., Snakes protect themselves when they feel threatened., There are more than 3,000 snake species., New research helps scientists understand animals., Dogs can understand a human gesture., A whale uses sounds as a signal., Every animal has different behavior., Crows are famous for their intelligence., Scientists found evidence of animal communication., Some researchers study animal language.

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