Pair Bond Durations

Transient

Brief associations lasting only for copulation with no extended pair bond

1,413 Animals

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Bombardier Beetle

Tiny beetle, big chemical comeback

Tiktaalik

The Arctic "fishapod" in transition

Sea Trout

One fish, two worlds

Sandworm

Bristle worms: engineers of the seafloor

Dragon Snake (Javan Tubercle Snake, Javan Mudsnake)

Dragon-hide scales in a leaf-litter life

Liopleurodon

Jurassic seas' power-jawed predator

Zebrafish

Striped minnow, giant science impact

Kamehameha Butterfly

Hawaii's royal forest flyer

Cane Rat

Grasscutters of Africa's tall reeds

Golden Trout

The Sierra's living gold

Blowfly

Nature's cleanup crew in metallic armor

Eastern Cottontail

Edge-habitat sprinter with a cotton tail

Ocean Pout

Cold-water bottom dweller with antifreeze

Kingklip

King of the deep Cape shelf

Lake Trout

Deep-lake char, built for the cold

Black Bass

Built for the strike, born to guard

Black-Tailed Rattlesnake

Dark tail. Quiet ambush. Rattle ready.

Pygmy Rattlesnake

Tiny rattle, vital predator

Chilean Recluse Spider

Six eyes, one hiding place: corners.

Tokay Gecko

The gecko that shouts and sticks

Nile Monitor

Tail-powered hunter of Africa's waters