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Extreme animal weapons [videorecording (DVD)] : Nature's arms race.

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WGBH Educational Foundation ; PBS Distribution, 2018.

DVD 591.47 E96 Doc

Animal weapons.

Animal defenses.

Animal behavior.

Alternate title:

Nova. Extreme animal weapons [videorecording (DVD)] : Nature's arms race

Nature's arm race [videorecording (DVD)]

[videorecording (DVD)] :

1 videodisc (60 min.) : 5.1 Dolby digital sd., col. ; 12 cm.

Orginally broadcast as an episode of Nova on PBS November 22, 2017.

English (SDH) subtitles for the deaf and hard of hearing.

Produced and directed by Peter Fison.

Narrated by Eric Meyers.

"From lobster claws and dog teeth to bee stings and snake fangs, every creature depends on a weapon. But some are armed to extremes that make no practical sense -- whether it's bull elks with giant 40-pound antler racks or tiny rhinoceros beetles with horns bigger than their body. What explains giant tusks, horns and claws that can slow an animal down and even impair health and nutrition? Showcasing astonishing wildlife cinematography, Extreme Animal Weapons investigates the riddle of outsize weaponry and uncovers a bold new theory about what triggers an animal arms race. In creatures as varied as dung beetles and saber-toothed tigers, shrimp and elephants, the same hidden factors trigger the race and, once started, these arms races unfold in exactly the same pattern. In this enthralling special, NOVA cracks the secret biological code that underlies nature's battleground."--Container.

Documentary television programs.

Wildlife television programs.

Nature television programs.

Science television programs.

Films for the hearing impaired.

Meyers, Eric, 1959-

PBS Distribution (Firm)

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