A. Elephants
B. Whales
C. Great White Shark
D. Rhino
Facts About the Animal that Stays Pregnant the Longest:
Elephants give birth in 22 months, 2.5 times longer than the typical person and 2 months longer than the whale, which has the second-longest delay. This is due to a few factors. First, weight: newborn elephants weigh 250 pounds. The brain comes next; newborn elephants have developed brains from birth. The delayed hormonal process comes in third.