Common European Adder
Zigzag guardian of the heath
Reproductive Methods
Internal Fertilization
Sperm fertilizes egg inside the female's body, common in mammals, reptiles, and birds
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Animals
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Internal Fertilization Animals
Horned Adder
Horned eyes, hidden strike
Peringuey's Adder
The dune viper that vanishes in sand
Moon Jellyfish
Four horseshoes under a living moon
Jonah Crab
Big claws, Gulf of Maine flavor.
Ortolan Bunting
Long-haul bunting of open fields
European Bee-Eater
Colorful aerial hunter of summer skies
Nilgai
Blue bull of India's scrublands
Polecat
Small predator, big attitude
Macaque
Smart, social, seriously adaptable
Eastern Barred Bandicoot
Barred rump, big comeback
Eurasian Wolf
Wild Europe's original pack hunter
Potoo
The night's perfect branch impersonators
Ruddy Turnstone
Flip a stone, cross an ocean.
Sparrowhawk
Built for the blitz through the woods
Treecreeper
Spiral climbers of the bark world
Spider
Silk, stealth, and eight-legged skill
Gopher Snake
Rattlesnake act-harmless rodent hunter
Great Egret
Big white hunter of the wetlands
Pesquet's Parrot (Dracula Parrot)
New Guinea's Fig-Eating Dracula Parrot
Eastern Woodrat
Big nests, forest forager, true packrat
Moccasin Snake
White-mouth warning of the wetlands
Blue Tit
Blue crown, bold mind, busy feet
Dunnock
Hedgerow accentor, not a sparrow