Andy Rouse / Bengal Tiger (Panthera tigris) family drinking from pool, Ranthambhore, India

Jami Tarris / Bengal Tiger (Panthera tigris tigris) in waterhole, Ranthambore National Park, India

Jan Hamrsky / Diving beetle (Colymbetes fuscus) close up head portrait. Europe, June. Controlled conditions.

Hermann Brehm / A young female Bengal Tiger (Panthera tigris) walking into water. Banghavgarh National Park, India, April.

Hermann Brehm / A young female Bengal Tiger (Panthera tigris) walking into water. Banghavgarh National Park, India, April.

Hermann Brehm / Young Tigress (Panthera tigris), 22 month, being frightened by a dead leaf. Banghavgarh National Park, India, April.

Andy Rouse / Indo-chinese Tiger (Panthera tigris corbetti) in water. Thailand captive (non-ex)

LYNN M. STONE / Bengal tiger {Panthera tigris tigris} standing amongst bamboo at water's edge, captive

Andy Rouse / Bengal Tiger (Panthera tigris tigris) jumping through water, captive, USA (non-ex)

Andy Rouse / Bengal tiger (Panthera tigris tigris) male walking beside lake, Bandhavgarh NP, Madhya Pradesh, India

LYNN M. STONE / Bengal tiger in water portrait {Panthera tigris tigris} captive

Anup Shah / Young female tigers cool off in waterhole (Panthera tigris) Ranthambhore NP India