The tail of a T. rex primarily served to balance the weight of the rest of its body and its massive head. Contrary to its depiction in Jurassic Park T. rex probably could not run fast.
because t rex was so big that if t rex didn't have a tail, it would fall
Most tails are thought to have been used for balancing.
The Sumatran tigers tail it approximately 1 meter long. the tail helps them to balance when turning swiftly. hope this helped :)
35 feet long
The tyrannosaurus rex had a rounded rectangle for a head, an oval for a body, and a long, stretch triangle for a tail. It was not one shape.
Its head, teeth, body, legs and tail. Its arms were tiny
The kangaroo uses its tail for balance as it hops.
Ankylosaurus's entire back, tail, neck, and head was covered in bony armor that was impenetrable by Tyrannosaurus. In addition, Ankylosaurus was armed with a bony tail club that would easily have been lethal to an attacking Tyrannosaurus. For these reasons, it is no surprise that Ankylosaurus fossils are never found with Tyrannosaurus bite marks, unlike the fossils of other contemporary herbivores like Edmontosaurus and Triceratops, which are frequently found to have been eaten by Tyrannosaurus. Thus, it is safe to say that Tyrannosaurus rarely, if ever, attacked Ankylosaurus.
balance
Balance.
for balance
Nothing much but they may loose some of their balance because balance is what the tail is there for.
stegasaurs are dinosaurs with big spikes on their long tail. they are not as big as a tyrannosaurus but bigger than a valociraptor.