Polacanthus
Hip-shielded tank of the Cretaceous
Mating Social Behaviors
Solitary
Individuals live alone except during mating encounters, with no lasting social bonds
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Animals
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Solitary Animals
Archaeopteryx
Teeth, tail, and feathers-airborne!
Old House Borer
Hidden larva, big timber trouble.
White Shark
Warm-bodied ruler of the blue
Kitefin Shark
Deep-slope slicer with a stealthy bite
Shortfin Mako Shark
Warm-blooded speed in the open sea
Great Hammerhead Shark
Biggest hammerhead, biggest comeback needed
Pacific Sleeper Shark
Deep, cold, and quietly formidable
Dusky Shark
Slow to grow, easy to lose
Pygmy Shark
Small shark, big glow.
Longfin Mako Shark
Long fins. Open ocean. Rare sight.
Gigantopithecus
Big teeth, big questions
Hovasaurus
Madagascar's Triassic water-runner
Sarkastodon
Eocene titan of tooth and bite
Nuralagus
The Balearic King Rabbit
Leptocephalus
Leaf-larva today, eel tomorrow
Machaeroides
Eocene saber-tooth-without the cat
Tusoteuthis
The deep sea's long-armed giant
Russel's Viper
Spots, hiss, and high-stakes venom
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
Viperfish
Fangs, lights, and life in the dark