The dark stripes on these zebra clearly show up as warmer than the white areas because they absorb heat instead of reflecting it.

This pelican, which had just stood up after sitting on its feet, has left a clear trail of warmer footprints behind it.

A closer look at the Mexican red-kneed bird eating spider shows that the tips of its legs are the coolest areas.

The cold nose of this sloth is clearly visible as it clambers through Rainforest Lookout.

Three South African black-footed penguins trundle along the edge of their cold pool

These Asian short-clawed otters are as hot-headed as the penguins

Fatty the Meerkat enjoys a turn under his heatlamp

The coarse hair on this warthog’s back helps keep him cooler

Three silvery marmosets dangle their cool tails behind them

By changing the parameters on the thermal camera, the veins running through this butterfly’s wings are clearly visible.

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