- AbsoluteAstronomy.com: Bitis
- Relates common names, characteristics, description, range, behavior, reproduction, and species list.
- African Wildlife: Puff Adder Facts
- Explains names, size, lifespan, distribution, food, breeding, venom, and behavior.
- Albany Adder (Bitis albanica)
- Gives status, conservation, range, habitat, biology, related species, pictures, and threats.
- Berg Adder (Bitis atropos)
- Features picture, distribution map, appearance, range, habitat, movement, diet, and threats.
- Bitis arietans (Puff Adder)
- Furnishes picture, description, range, distribution in Tanzania, and natural history.
- Bitis gabonica (Gabon Viper)
- Covers physical appearance, habitat, range, reproduction, and behavior. Includes image.
- Gaboon Viper (Bitis gabonica)
- Explains appearance, locations, habitat, diet, behavior, predators, breeding, and ecosystem importance.
- Horned Adder or Single-horned Adder (Bitis caudalis)
- Addresses distribution, appearance, size, behavior, habitat, status, and threats.
- Many-horned Adder (Bitis cornuta)
- Includes pictures, previous name, status, description, range, habitat, behavior, sounds, and threats.
- Many-horned Adder (Bitis cornuta)
- Describes local name, distribution, size, appearance, diet, behavior, and threats.
- Namaqua Dwarf Adder (Bitis schneideri)
- Pictures and videos accompany details on appearance, behavior, range, habitat, diet, threats, and status.
- Puff Adder (Bitis arietans arietans)
- Offers locations, description, map, image, habitat, prey, breeding, threats, and behavior.
- Red Adder (Bitis rubida)
- Explains status appearance, behavior, diet, distribution, conservation, threats, and related species.
- Rhinoceros Viper (Bitis nasicornis)
- Covers description, range, habitat, behavior, food habits, and reproduction.
- Snakes: Red Adder
- Picture and map accompany size, appearance, biology, distribution, conservation, and threats.
- Southern Adder (Bitis armata)
- Furnishes range, habitat, pictures, diet, behavior, appearance, threats, conservation, and related species.
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