That one's pretty obvious. Giraffes are herbivores, so their caloric input is both less efficient and linear with time. Most herbivores spend a huge percentage

That one's pretty obvious. Giraffes are herbivores, so their caloric input is both less efficient and linear with time. Most herbivores spend a huge percentage of their time grazing. Lions on the other hand need to be in tip-top shape only a few hours per day to cover their calories.