The arctic fox eats lemmings, arctic hares and some birds and bird eggs. But its main source of food is the lemming and its population size fluctuates with the cycle of the lemming population. © ... more 
The arctic fox eats lemmings, arctic hares and some birds and bird eggs. But its main source of food is the lemming and its population size fluctuates with the cycle of the lemming population. © Staffan Widstrand / WWF
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| Photo By © Staffan Widstrand / WWF / © Staffan Widstrand / WWF
Sun, Apr 15, 2012 8:17 PM EDT