First fully warm-blooded fish found in deep ocean - An opah is released with sensors to track temperatures as it dives off the California coast. The opah, which lives in the deep ocean, is the first fish known to be fully warm-blooded, circulating heated blood throughout its body, enabling it to be a vigorous predator in frigid ocean depths.
The 7 #Dog #Breed Groups Explained - Hound Group: All hound breeds pursue warm-blooded quarry. The sleek, long-legged sighthounds use explosive speed and wide vision to chase swift prey, like jackrabbits and antelope. Tough, durable scenthounds rely on their powerful noses to trail anything from a raccoon to an escaped convict.