<p>Because they are docile and colorful, Mexican red-knee tarantulas are popular in the pet trade, generating considerable income. They are also kept in many zoological institutions. Mexican red-knee tarantulas are commonly used in Hollywood films, as well.<span> (Locht, Yanez, and Vasquez, 1999; Nashville Zoo at Grassmere, 2009; Oakland Zoo, 2008; West, 2009)</span></p>  <p><strong>Positive Impacts: </strong>pet trade</p>