T-Rex, all day long. Looking at the scientific evidence (all we have to go on in the case of the dinosaur), there is very little to choose between an elephant and a T-Rex in terms of size, strength and mobility. read more
Like many answers state below, an elephant is a powerful creature, and T-Rex was rather unintelligent in comparison. Elephants could push them over, stab them, or charge them, each with very little countermeasures. Of course, one may argue a T-Rex could sneak up on the elephant, but in truth, it's close to impossible. read more
No it wouldn't. the T-Rex might be able to kill the Elephant, but the fight could go either way since they have comparable size (14,000 for Bull Elephants vs estimates ranging for the T-Rex being roughly 11,000 pounds or more. I'm voting for the Elephant. read more
1. It's hard for the T-rex to reach the elephant's neck. 2. read more