Specimen 73

Specimen 73 is a creature found in the Big Empty in Fallout: New Vegas add-on Old World Blues.

Background
Specimen 73 was probably some type of experiment based on the facts that it is found inside of the Z-14 Pepsinae DNA Splicing Lab and from it's name.

Biology
Specimen 73 appears to be a stronger and more powerful version of a Cazador, similar to the legendary Cazador.

Appearances
Specimen 73s appear in Fallout: New Vegas add-on Old World Blues.