Elephants carry their babies for two years, and more astonishing animal pregnancies - https://www.nationalgeographic.com/animals/article/mammals-have-extremely-diverse-pregnancies-heres-why

“Larger animals need more food to keep their bodies fueled,” Manger explains. “The elephant, which can eat several hundred kilograms of low-quality food each day, devotes a lot of time to eating, leaving less time for sleep.” - http://www.zmescience.com/ecology/animals-ecology/wild-elephants-sleep/

The Elephant Next Door -  https://www.nationalgeographic.com/premium/graphics/asian-elephants-behavior-coexistence-survival-feature

100 years of elephants: See how Nat Geo has photographed these iconic creatures - https://www.nationalgeographic.com/animals/article/100-years-of-elephants-national-geographic-wildlife-photography

Wild elephants solve complex puzzles for food. But can their wits save them? - https://www.zmescience.com/science/wild-elephants-complex-puzzles-solver/

What elephants eat — and why they spend so much time eating - https://www.zmescience.com/feature-post/natural-sciences/animals/mammals/what-elephants-eat-and-why-they-spend-so-much-time-eating/

The Elephant Next Door - https://www.nationalgeographic.com/premium/graphics/asian-elephants-behavior-coexistence-survival-feature