Colossal Biosciences said Monday the wolf pups range in age from three to six months old and have long white hair and muscular jaws. Dire wolves went extinct more than 10,000 years ago.

The researchers studied a 13,000-year-old dire wolf tooth unearthed in Ohio and a 72,000-year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

But it still requires a wild wolf to be sedated for a blood draw and that's ... The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment ...

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.

The researchers studied a 13,000 year-old dire wolf tooth unearthed in Ohio and a 72,000 year-old skull fragment found in Idaho, both part of natural history museum collections.