Elusive street artist Banksy has left a trail of animal-themed artwork around London, all created using his signature black stencil style ... leaving their meanings open to interpretation ...

Banksy's latest "graffiti campaign" began last Monday, when an ibex goat painted in his "signature stencil-style silhouette ... "biggest clue yet" as to the meaning of the campaign, said Metro.

Banksy, famous for his enigmatic, often powerful artworks, has chosen not to caption his animals online. He also hasn't explained why they're all painted in the same black stencil style.