What animal is pregnant the longest?
How long is a shark pregnant?
Gestation periods for sharks vary, from about five to six months to two years [sources: Carrier, Oregon Coast Aquarium]. The spiny dogfish shark has the longest gestation period, not just of sharks, but of all vertebrates, at 24 months [source: Bester].
How long do zebras live in the zoo?
How often do zebras give birth?
Zebras give birth to one young, called a foal, every 2-3 years.
How long is longest pregnancy?
But other doctors at Los Angeles’ Methodist Hospital found it incredible that Mrs. Hunter had been pregnant 375 days (instead of the normal 280) before her baby was born there last week; 375 days would be the longest pregnancy on record, topping the runner-up by about 58 days.
How long is elephant pregnant?
African bush elephant: 22 months
Asian elephant: 18 – 22 months
Do sharks have penises?
Technically, male sharks don’t have penises. What they do have are grooved organs that are used to deposit sperm into the genital duct of sexually receptive female sharks. These organs, called ‘claspers’, are developed along the inner margin of each pelvic fin (the paired fins located behind a shark’s belly).
Do mom sharks eat their babies?
Yes, “intrauterine” refers to embryos in the uterus. Sand tiger sharks eat their brothers and sisters while still in the womb. What’s more, once the unborn babies consume all of the living embryos, they turn to their mother’s unfertilized eggs next, in a phenomenon called oophagy, or egg-eating.
Do sharks give birth?
Do sharks lay eggs or give live birth? Sharks exhibit a great diversity in reproductive modes. There are oviparous (egg-laying) species and viviparous (live-bearing) species. Oviparous species lay eggs that develop and hatch outside the mother’s body with no parental care after the eggs are laid.