Physical Characteristics
Male Masai giraffes average roughly 5.3 m tall and can approach 6 m; females average about 4.3 m (Giraffe Conservation Foundation). Adult males average around 1,200 kg and females around 830 kg — so don’t present 1,200 kg as if every giraffe weighs that much. The neck is about 2 m long with 7 cervical vertebrae (like humans) but enormously elongated. The tongue reaches about 50 cm; its dark bluish-purple/black pigmentation may help protect exposed tissue from sunlight during prolonged browsing, though the exact evolutionary significance isn’t fully established. Giraffes are browsers, not grazers — feeding mainly on leaves, shoots, twigs, flowers, seed pods and fruits (Acacia/Vachellia and Commiphora are important), using lips, tongue and teeth to strip leaves around thorns.
❤️ The Cardiovascular System
Blood must travel from a powerful heart to a brain ~2 m above, so blood pressure is much higher than in humans. Thick vessels, tight leg tissues and a rete mirabile network help regulate brain blood flow — especially important when the giraffe lowers its head to drink (spreading its front legs to reach the ground).
⚔️ Necking
Adult males compete using necking: swinging their necks against one another to establish dominance and mating access. This is male-male competition, not “fighting to protect a herd.” Males generally have larger ossicones, heavier skulls and more robust necks.