Rare black wolves — could they be wolf-dog mixes?

Camera traps in a forest have caught video of two all-black wolves. Now scientists are investigating where they might have come from.

Video still showing a rare black wolf crossing a stream in a Polish forest last summer. Source: SAVE Wildlife Conservation Fund Poland/AP

‘Rare black wolves caught on camera in Polish forest by wildlife researchers’ ran a recent CNN headline. Zoologist Joanna Toczydlowska, studying beavers, had set camera traps along a river. The footage of two all-black wolves was an unexpected bonus; this colour form is very rare in Europe.

The location is being kept secret; not everyone in Poland loves wolves.