Did you know that the Rat appears in Half-Life a grand total of 8 times across 3 maps?

They only appear in these Training Course maps:
t0a0 - 2 Rats
t0a0b - 3 Rats
t0a0b2 - Ditto

The Rat does not appear in Half-Life: Source, but is supposed to. The entity is still in those BSPs in Half-Life: Source but they had not ported over the NPC itself. They also didn't bother to port over the Tentacle Maw, despite being compiled in HL (but not used and lacks its model.) They did port over the cut Floater monster, despite not once appearing in the game.

How could they get away with this blasphemy!

#RatFacts