Rhesus macaque monkeys show eye movements similar to our own when observing pareidolia-inducing objects and real faces, suggesting that this phenomenon is baked deep into our social primate brains.
Millions of people have viewed the video of Darwin, the young Japanese macaque running loose shortly after he apparently escaped from a locked vehicle in an IKEA car park.
Other primates, like macaques and marmosets, demonstrate similar patterns, so it's likely that gloss perception is something that developed a long time ago in our shared evolutionary history.
Most of the primates are a sort of monkey called rhesus macaques. They are designated for use in scientific research, including experiments for COVID-19.