It’s not blood. The animals are bled immediately after death (or during, depending on the method).

The liquid coming out of raw mean is called purge, which is myoglobin and water.

In the case of the above image, it’s rendered fat, water, myoglobin, and possibly other things depending on how it’s been prepared.

Source: I used to work as a butcher, grew up on a farm, and worked on kill floors.