The adopted pet with a rare condition lived an unexpectedly long life.
The wolf could be the first of its species to roam Arizona in 70 years.
A recent study finds a population of Kashmir musk deer living in steep, rocky outcrops in the northeast part of the country.
The population of the Philippines dwarf buffalo, one of the world's rarest animals, grows to its largest since efforts to save them began.
The leopard frog with a blue hue is a 1 in 300,000 rarity.
Rejected by their mother, these two three-week-old cubs will melt your heart.
Only the second known sighting of pale killer whale in the wild.
The rare deep-sea dweller was found 100 miles offshore and weighed 200 pounds.
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