KUALA LUMPUR, June 10 -- In a moment of unexpectedly human vulnerability, a gorilla at a Japanese zoo has gone viral for appearing to suffer an existential crisis following a spat with his mate.

The footage depicts Kiyomasa, a 13-year-old male gorilla, seemingly adrift in a sea of deep contemplation following a disagreement with his mate.

Rather than returning to typical primate antics, Kiyomasa is seen perched in solitude, his posture striking a chord with viewers who described it as a classic "thinking pose", evocative of Michalangelo's The Thinker.

Kiyomasa is no stranger to the spotlight; he is the son of the world-famous silverback Shabani, whose own imposing presence has made him a celebrity in his own right.

However, while his ...