The video explores fascinating facts about giraffes, focusing on their long necks and unique anatomy. It discusses various theories on why giraffes have evolved such long necks, including Darwinian evolution, sexual selection, and other hypotheses. The video also highlights giraffes' habitat preferences, their long tongues, and their circulatory system, which supports their tall stature. Despite extensive research, the exact reasons for their long necks remain a mystery, with multiple factors likely contributing to their evolution.

What is the approximate length of a giraffe's neck?

• More than 7 feet

• More than 5 feet

• More than 4 feet

• More than 6 feet

How many vertebrae do giraffes have in their necks?

• 9

• 7

• 5

• 11

What is one theory for why giraffes have long necks?

• To swim better

• To dig deeper

• To reach high branches for food

• To fly

What is the purpose of a giraffe's long tongue?

• To protect from sunburn

• To dig for water

• To help them swim

• To attract mates

How does a giraffe's heart support its long neck?

• It is located in the neck

• It is large and has thick walls

• It is very small and efficient

• It beats very slowly