I love the documentary, but as a biologist who understands the populations of Texas wildlife, it's almost more a mourning what's lost than celebrating what's here. Sure, Texas has mountain lions - a few dozen to a couple hundred that are hunted without restriction, while other states have thousands and regulated hunting seasons. Texas has a coast that some dolphins visit, but it is nothing compared to the rocky coastal of the Pacific with seals, sea lions, dolphins, tidal pools, and whales galore. Texas has a few struggling black bears while other states have tens of thousands of the same (and sometimes grizzlies, too). Texas was once one of the very few states with two species of native wolf; there are obviously have zero now. Texas has a big deer herd that is there only because of the habitat opened up by the lack of elk, bison, pronghorn, and bighorn (there are a few very small populations of those in tightly controlled areas). Most importantly, Texas has Big Bend, the Guadalupes, and then almost zero large tracts of intact ecosystem, because hardly any of Texas is preserved, whereas other western states have hundreds and hundreds of square miles of wilderness that is formally protected. The Texas wildlands do not have near enough the acreage, much less the interconnections, to maintain much in the way of wild character a d wildlife habitat.
Texas has a few small pockets of relic wildness, but that wildness is more akin to viewing a large zoo or museum exhibit than it is to seeing any true wild. The Big Bend area is the lone exception.
Rant over. I loved growing up in Texas, but I can never move back. Montana is home now.