Proper response

[Darth]

Unless/until they are real small, then they do IIRC.

I think you may be confusing them with neutron stars or something similar, which are indeed insanely massive for their tiny size but are a different animal from black holes.

Brief history o time:

Primordial black holes with initial masses less than this figure would already have completely evaporated, but those with slightly greater masses would still be emitting radiation in the form of X rays and gamma rays. These X rays and gamma rays are like waves of light, but with a much shorter wavelength. Such holes hardly deserve the epithet black: they really are white hot and are emitting energy at a rate of about ten thousand megawatts.

The smaller they get, the more they emit, and the more energetic their emissions.