But this extreme feature comes at a cost: namely the energy required for the heart to pump blood up to the head against gravity. As a result, giraffes have high blood pressure, more than twice that of ...

In humans, chronic high blood pressure forces the heart to work too hard. The muscle of the left ventricle thickens in defense, a condition called hypertrophy. Eventually, this leads to fibrosis, ...

Giraffes are just as astonishing on the inside as they are to look at. Standing up to 19 feet tall, they require enormously high blood pressure to pump blood up to the head, yet they suffer few, if ...

Using a few ingredients from around the house, you can create a batch of thick giraffe spit and learn how this adaptation helps a giraffe eat from thorny trees. STEP 2: Mix the ingredients with your ...

Giraffes are known for their towering necks, but the enormous circulatory demands caused by this height present a classic evolutionary puzzle. Researchers from South Africa and Australia found giraffe ...

Giraffes are iconic for their incredibly long necks, which are not only a standout physical feature but also a marvel of evolutionary adaptation. These necks can measure up to six feet long, making ...

The tallest mammals in the San Diego Zoo have welcome a new member to the fold: a 14-month-old male giraffe. The baby comes from the Dallas Zoo and is called Kicheko, which translates to “laughter” in ...