Template:Featured article/Main/12 June
Intelligent deathclaws were once "ordinary" deathclaws, until Enclave experimentation made them more intelligent and gave them the ability to speak. It began in 2235 when the Enclave captured many deathclaws attempting to create special fighting units for waging war in hostile environments. After the discovery of the Mariposa Military Base the next year the Enclave exposed the deathclaws to Forced Evolutionary Virus. While the Enclave hoped that the deathclaws would be intelligent enough to obey orders without being so intelligent as to question them, the deathclaws began to doubt the morality of their masters. While they helped the Enclave in storming Vault 13 in 2241 and kidnapping the population, they soon abandoned the Enclave, adopting the now-empty vault as their new home under the leadership of Gruthar.