ജീവശ്രീ പാലക്കാട്‌: Gorillas are very intelligent and have been taught simple sign language in captivity. Like chimpanzees, gorillas have been observed using tools in the

Thursday, 6 October 2011

Gorillas are very intelligent and have been taught simple sign language in captivity. Like chimpanzees, gorillas have been observed using tools in the

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