Mexican redlegs (or knees as per the article) are hardly “endangered”. They are extremely common spiders, and favored by spider enthusiasts for their mild temperment and tolerance to being handled.
Were they all yelling “Allahu Akbar”? (72?)
I remember being in the chow line at the Fieldhouse of my college(under construction at that time) and the guy ahead of me had a tarantula climbing up and down his arm, around his raincoat collar. It took everything I had not to scream and run...
The species was CITES-listed in the mid-1980s and it's illegal to collect them in the wild. The ones you see in stores today are bred in captivity.