Silky Shark
Silky: the sleek shadow of tuna seas
Reproductive Methods
Internal Fertilization
Sperm fertilizes egg inside the female's body, common in mammals, reptiles, and birds
1,899
Animals
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Internal Fertilization Animals
Blacktip Reef Shark
Black tip. Bright reef. Loyal patrol.
Longfin Mako Shark
Long fins. Open ocean. Rare sight.
Caribbean Reef Shark
The reef's resident requiem shark
American Wirehair
The steel-wool sweetheart
Sphynx
Warm-hearted cat in a velvet suit
Waimanu
Penguins at the dawn of diving
Gigantopithecus
Big teeth, big questions
Hovasaurus
Madagascar's Triassic water-runner
Pelagornithidae
Giants of the wind, teeth of bone
Sarkastodon
Eocene titan of tooth and bite
Nuralagus
The Balearic King Rabbit
Machaeroides
Eocene saber-tooth-without the cat
Hamburg Chicken
Spangles, speed, and steady eggs.
Tusoteuthis
The deep sea's long-armed giant
Russel's Viper
Spots, hiss, and high-stakes venom
Norway Rat
Built for cities, born to burrow
Palm Rat
Ports, palms, and perfect climbing.
Tree Viper (Bamboo Viper)
Hook-tailed hunters of African forests
Pit Viper
Heat-sensing hunters with hidden fangs
Viper
Hinged fangs, hidden hunters
Spiny bush viper
Spines in the leaves, fangs in reserve
Saw-scaled Viper
Small snake. Big sizzle. Serious venom.
Io Moth
Big eyes. Bigger bluff.