Does the t-rex have any predators and if any how does he protect himself from attacks?

Answer 1

As far as we know, Tyrannosaurus was the largest carnivore in his environment. Even if Horner turns out to be right about them being predominantly scavengers, the other carnivores in the area are much smaller in size, which is incentive on its own to leave him alone. It has been suggested that the dromaeosaurs and more slender tyrannosaurs were pack hunters, which would give them an advantage as long as Tyrannosaurus did not do the same itself.

Teeth of other carnivores and evidence from droppings can equally be evidence of scavenging rather than predation - therefore the best way of determining if a creature has predators is to examine the injuries it has healed and try to figure out what may have caused them: So far there are two very good quality specimens with signs of injury featuring bone regrowth - the size of the injuries most closely match the teeth of more adult tyrannosaurs. There is no current indication that they ate each other, but at the very least it would seem they were their own worst enemy.

Answer 2

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Answer 3

Nope, they're all dead. (dogs wouldn't be interested in petrified bones, either.)

Edit....

You wanna get all serious? Actually, there were precrocodilians that were big enough to eat T-Rex, and there was nothing he could do about it if he wanted to get a drink.

Answer 4

Yes: Huge meteors heading for earth. All he can do is run in circles and wave his little arms in the air.

Answer 5

It shivers in museums, when a dog sniffs its bones!