Normally the bearded dragons will do this when they are basking under the heat lamp. Bearded dragons will also have their mouth open if they have a respiratory disease. However, since having an open mouth is common behavior for bearded dragons, it's normally just a sign that they are regulating their heat.
Landrace. A landrace is a local variety of a domesticated animal or plant species which has developed largely by natural processes, by adaptation to the natural and cultural environment in which it lives.hen an animal landrace is codified as a pedigree breed without significant selective breeding to alter it, though often to lock in its defining traits, it is often referred to as a natural breed or traditional breed by breeder and fancier organisations.
Race, as a social construct, is a group of people who share similar and distinct physical characteristics. First used to refer to speakers of a common language and then to denote national affiliations, by the 17th century race began to refer to physical (i.e. phenotypical) traits.