They are classified as Fanged Beast. The relation between the two is not male and female like Rathalos and Rathian or Teostra and Lunastra, but rather Lolo is a recessive gene where as Ray is not. They are the only Fanged Beast that lives in pairs, unlike Conga or Blango that live in a highly complex family, or the Rajang which usually is a sole wanderer. Interestingly, they are closely related to Rajang.
So far, Gougarf have only been found living in the Gorge.
Gougarf are top predators in their environment preying on Apceros, Mosswine and Genprey as their usual prey. Although high in the food chain together, a sole Gougarf can be overwhelmed by Espinas Subspecies, Rajang, Tigrex, Dyuragaua, Berukyurosu, Rathalos, Rathian, and its Subspecies, along with Rebidiora. But when in company of other Gougarf, they can resist and even overwhelm some of these predators.
These beasts are totally capable of using magnetism similar to Rebidiora and Rukodiora. Another biological adaptation is its sheer strength that it uses to overwhelm unsuspecting attackers (though other Gougarf are needed for such a task). Other adaptations are its highly aggressive (yet sane enough) nature and its extreme coordination, which most monster pairs lack in. With these adaptation, tackling an Apceros is not a challenge. The hair on a Gougarf's body picks up large amounts of electrical currents and is able to produce a large amount of electricity. A Gougarf's genes play apart in their charging ability. The charges on Ray Gougarf and Lolo Gougarf are both different from each other and barely has any strength. But by working together the charge is dramatically stronger and they are able to produce their infamous magnetic attacks. To support them while their doing these attacks, their tail helps them keep balance along with their heart. The jaws of the Gougarfs are able to crush the hard shell of prey.
The Gougarf are highly aggressive creatures that should not be provoked. However, Ray is not as aggressive as Lolo who might attack Ray if KO'd in Rage mode. Even still, their aggression is nothing compared to the Rajang. When the Gougarf goes on an apparent rampage in an area, it really is just playing with another Gougarf.