Do platypuses sweat milk? Mammary patches and nursing
Platypuses do not sweat milk. Females secrete milk from abdominal patches without nipples, nursing their young while protecting them with immune proteins.
Reproduction & Life Cycle
How do jellyfish reproduce: medusae, polyps and strobilation
Jellyfish alternate sexual medusae with cloning polyps. This guide follows eggs to planulae, scyphistomae, strobilation and ephyrae.
Are jellyfish immortal? Turritopsis reversal, cyst and lifespan
No, only Turritopsis dohrnii can repeatedly revert to a polyp, and even it often dies. Learn how the cyst stage works and how compass jellyfish differ.
How long do octopuses live: species averages and breeding end
Most octopuses live a year or less, while wild giant Pacific averages reach 3 to 5 years. Learn how breeding ends life and how long eggs take to hatch.
Do penguins mate for life? Pair bonds, divorce and mate fidelity
Not all of them. Some gentoo pair bonds last a whole life, yet gentoos and little penguins divorce. Here are pair bonds, divorce rates and mate switching.
Why do bigger animals live longer? The pattern and its exceptions
Across mammal species, a bigger body predicts a longer life, and fewer deaths from predators and other outside causes may be part of the reason.
How long do bears live? Lifespans by species
Bear lifespans vary by species: wild brown bears average about 20 years, wild black bears most often live about 10, and wild polar bears typically 15 to 18.
How long do giant pandas live? Wild and zoo lifespans
Giant pandas live about 15 to 20 years in the wild and about 30 in human care, by the Smithsonian’s National Zoo estimate. Other sources give different figures.
How long do tigers live in the wild and in captivity?
Estimates for wild tigers run 8 to 10 or 10 to 15 years. A typical captive lifespan is 16 to 18 years, and some tigers have lived to 26.
How long do coyotes live? Wild and captive lifespans
Wild coyotes live 5 to 6 years according to the University of Florida IFAS Extension. The National Park Service lists 13 to 15 years in captivity.