From the white Iberian lynx in Spain to the howler monkeys of Costa Rica: Why do animals change color?

Animal Color Change: An Unsolved Mystery

Scientists are puzzled by the appearance of a white Iberian lynx in Spain, and howler monkeys in Costa Rica, prompting calls for more research on environmental factors.

Some animals, like chameleons, octopuses, and snowshoe hares, naturally change color, but the case of a white Iberian lynx, named Satureja, is surprising. She lost her natural brown and orange tones, but retained the unique black spots that serve as a natural ID.

No one knows the reason for this striking change in coat color, which had already been observed in another lynx previously.

Researchers are seeking to understand the role of environmental factors, such as exposure to chemicals, in these anomalies.

Author's summary: Animals' color change puzzles scientists.

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EL PAÍS English EL PAÍS English — 2025-11-05

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