this post was submitted on 26 May 2025
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Kind of hard to maintain that bulk on leaves and grass, bud. I guess it would help them with predators, though.
Hippos and rhinos get pretty big on that diet! If anything plants are a better diet for something really chunky because plants cannot run away
The largest land animal today is an african elephant which is 14 feet tall. Brachiosaurus was 50 feet tall. They would need to eat an order of magnitude more because the cost of mobility increases with weight.
Penguins, seals, and whales (and to a lesser extent hippos) can maintain this ratio because it gives them bouyancy while travelling in water.
Plus, Hippos and Elephants are actually pretty big boned.
Sauropods had hollow bones and air sacs all throughout for lightweight structural support. You can't just compare sizes and assume similar density as elephants or other large mammals.
That lends to my notion that a fat Brachio would be unsustainable.