Instead, it appears in the gaps between other objects.
If nothing stands out, shift your attention toward the ship.
Look at its hull, funnels, masts, smoke and surrounding water as though they were not parts of a vessel at all.
Could several of those shapes combine to form a head, ears, nose or body?
The challenge becomes much easier once you stop asking, “Where did the artist draw a dog?”
A better question is:
“Which parts of this picture could become a dog if I looked at them differently?”
That small mental shift is often enough to reveal the illusion.
The claim that spotting the animal means your “brain is still young” should, of course, be taken as part of the entertainment.
A puzzle like this cannot determine someone’s actual brain age or intelligence.
What it can challenge is visual perception.