The biggest animals in the world are unique in terms of what they consume, behaviour, and physical attributes.

The mysterious, silent giants face increasing threats in Africa ... Or perhaps the giraffe’s long neck is simply to give an otherwise fairly defenseless animal a high vantage point to watch ...

Deep in the heart of Africa ... with its long neck, it is much shorter than a giraffe and harder to find in thick forests. Living in secrecy The okapi is believed to be an isolated animal ...

SAM: Ooh! Those leaves look so yummy! Ooh… I wish I had a longer neck so I could reach them! GRANDDAD: Long, long ago, that's exactly what the giraffe said. SAM: Did they? GRANDDAD: Oh, yes!