They've shared the ocean for eons, but only recently have scientists begun to understand the true nature of the hostile relationship between these two masters of the sea.

  Dr. Jeff treats a skittish Savannah cat with an unusual condition. Dr. Amy helps a beloved dog who was injured chasing a coyote.

  Beloved Asian small-clawed otter Pinkie has a recurring bloody nose, and the team goes to great lengths to find out what could be causing it.

  Mel and her daughter rescue a baby squirrel, while Dr. Jeff and Dr. Petra team up to save a beloved cat hit by a car.

  Staff work to train a trio of harbor seals to ride the elevator, with the only hiccup being a nervous seal named Floyd.

  Jeremy Wade traces the epic migration of the dorado catfish and discovers the issues putting this great river at risk   from leaking pipelines to impassable dams.

  A special team trained in military tactics flies into Kenya to help fight against elephant poaching.

  How can a lizard literally walk on water? How do hippos speed through water if they can't actually swim? Can jellyfish live forever? And, how do bees find nectar?