T. Rex Gained Tons During Puberty

washingtonpost.com: "If you think today's teenagers are difficult to live with, consider Tyrannosaurus rex, which at age 15 was gaining about 4.6 pounds per day -- 1,679 pounds per year -- and not from gobbling peanut butter sandwiches. Life was almost certainly a picnic -- all the time:To maintain a high growth rate, these animals would have to eat a lot.' An adult T. rex would have had a five-foot-long skull and 50 teeth. Six-member team that used seasonal rings in T. rex bones to determine the legendary carnivorous rate of growth ultimate teenage growth spurt.Bones from seven of the world's 30 known T. rex specimens, including the Field Museum's own Sue, to determine how fast body mass increased at various ages. They found that T. rex weighed about a ton at 13 but about a year later embarked on a four-year growth binge, to reach about 4.5 tons by age 18, after which it began to level off to an adult weight of around about six tons by 20. Estimated T. rex's life span at 30 years."

How would you like to have one of these for a pet...LOL