"The nearly complete female specimen named "Sue," discovered in 1990 and the subject of bitter legal battles for many years, suffered a non-fatal broken rib. Embedded in the broken and infected rib was a tooth fragment from another T.rex. Larson also found fatal wounds on the left side of her skull that were clearly the result of a T.rex bite. "'Sue's face was literally torn off by another T.rex" Larson says."
Sue was cheating on Big-T.
He put her in her place.
"But perhaps the most intriguing insight into T.rex behavior comes from the latest find, a specimen named "Steven." Some of "Steven's" vertebrae were literally bitten in half, and the vertebral bones that connected to tenderloin and T. rex T-bone steaks are missing. The only known animal living at the time with large enough and strong enough jaws to bite through T.rex bone was T.rex."
According to Larson, this is the first evidence that T.rex may have feasted on its own kind. "We knew they fought each other, we knew they killed each other once in a while, but we didn't know they ate each other too," he said. "