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To that end, the dire wolf was bigger than the grey wolves that existed at the same time, with large, shearing teeth carrying an extremely strong bite force.

"Colossal compared the genomes of the dire wolf and the grey wolf, and from about 19,000 genes, they determined that 20 changes in 14 genes gave them a dire wolf."

This week, 45 years of strict protection for grey wolves in Europe could come to an end.

Five grey wolves have been released into Colorado's Rocky Mountains after a 2020 vote on reintroducing them into the wild.

Both assumptions appeared to be doubtful in the case of the recolonisation of Germany by the grey wolf.