Putting this in spoilers cause well it is a spoiler.

IF you get to the end of the automatron DLC you will find a lab where they where extracting peoples brains and putting them in jars... well in this lap is the following.

http://steamcommunity.com/sharedfiles/filedetails/?id=650778528

Yep that is an x-ray of a deathclaws skull in a pre-war lab.

NOTE: this is not strange, as deathclaws where originally a pre-war military "unit" think of how k9 units are in modern times. The reason I am pointing this out though is bethesda put an it in the DLC, which might mean they have something in store for the deathclaws later.

Also in the lab are things like this

http://steamcommunity.com/sharedfiles/filedetails/?id=650779160

which only seems to make it creepier.

Now for the point of this topic, anyone else find other little hidden details in the DLC.

deathclaws are not pre war, the mechanist probably took that x ray.

Actually they are, well they where, then the master messed with them making them bigger and more dangerous.

nm you're right.

Dont feel bad roachor. I think the deathclaw (and mole rats) we have now are nothing like what they were working on prewar.

( I am well Cannon deficient and someone is sure to slap me down)

But I was thinking the whole program was kind of take the beans (food.... Bullets and beans, logistics with out em you dont have an army just a pissed off mob) away from the reds.... you had the rats to take out and ruin crops and the deathclaws as your livestock killer.

Too bad they both hulked out

There is nothing to suggest The Master did anything to deathclaws beyond a random off hand comment in the Fallout guide book which was written by another company entirely, and which was never referenced or backed up in any way in-game.

If The Master altered deathclaws... why did he never use them?

that guide book is still canon.

The best guess I have seen is cause they where to dangerous.

In a jar hanging from the roof, just above and to the left of the x-rays is a supermutant head. Also I noticed two smaller brains in another room. Me thinks they also may have tried to use non-human alternitives.