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The evolution of a large powerful neck, jaws, and hind legs was determined to be a favorable adaptation. Smaller, yet powerful, forearms were part of that adaptation. When attacking another animal, T-Rex pivoted at the hip, like a lever at it's fulcrum. The massive and heavy head was counter-balanced below the hips by the legs and tail. Because the head and jaw muscles were so large, there was selective pressure to reduce the size of the arms in order to minimize the animal's weight above the hip.
I have a theory. T-Rex probably used the same strategy as the Komodo dragon, administering a poison bite, probably using a bacteria in it's saliva to poison the blood of it's prey. Then it would follow the sickened animal until it collapsed. Hence it did not need large fore arms to grapple with it's prey.
They have short arms because they have long feet. (I think)
the t-rex was a carnivorous hunter.its long legs hel;ped it to run quickly on its hind legs. its short arms were to help it be lighter
The (relatively) tiny arms of the Tyrannosaurus Rex were used to hold food in position next to the mouth, to be eaten. It was not necessary for the arms to be larger since the creature would just bend down to reach things if necessary, rather than reaching down with its arms. It was strictly bipedal, which is to say, it only walked on its legs, so the arms did not have to serve any other function.
They have arms so that they can pick the bits of other dinosaurs out of their teeth.
Dinosaurs have never had hands. The size of the paws is based on the type of the extinct mammal.
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What is a dinosaurs forelimbs?
Hands.
Are humans small dinosaurs?
no dinosaurs were reptiles and we are mammals.
What is the nearest relative of small dinosaurs?
The closes living relatives to all dinosaurs large and small are birds.
What were birds before they were birds?
They were small dinosaurs. I'm not kidding.`````````````````No, this person is not kidding. Although, they were not just small dinosaurs. I believe birds are also related to such dinosaurs as Tyrannosaurus Rex.
What meat-eting dinosaurs liked to eat?
The smallest carnivorous dinosaurs, such as Compsagnathus, are insects and small vertebrates. Large carnivorous dinosaurs usually ate large and small herbivorous dinosaurs. Some, however, ate fish, including Spinosaurus and Baryonyx.
Where elephants here before dinosaurs?
Mammals did not evolve until dinosaurs were prolific when they did appear they were very small and very scarce when dinosaurs died out.
Are sea stars related to sand dollars?
no but you must be related to the dinosaurs because your brain is SMALL. no but you must be related to the dinosaurs because your brain is SMALL.
Who are the ancestors of birds?
Birds evolved from small reptiles that lived during the age of dinosaurs, but not from the dinosaurs themselves.
Why were woolly mammoths so tall?
Not all dinosaurs had large feet. Some dinosaurs were small and didn't have big feet.
Was there any small dinosaurs?
Lesothosaurus, originally found in Lesotho Africa.
What did the verociraptor dinosaur eat?
Small mammals or herbivorous dinosaurs
Did early humans kill small dinosaurs for food?
yes they do
