Learn to draw a horse profile portrait using basic shapes like circles, triangles, and trapezoids. If you check out this tutorial you’ll see it also takes a close look at the features and structure of a horse’s face and ears while providing guidance on placing facial features. ...
The elaborate crowns of horns possessed by many species of horned lizards are classic examples of intuitively adaptive features that lack direct tests of function. The bony horns that give horned lizards their name are presumed to function as a defense against predators. Results showed predation by...
A life span of at least five years has been documented for the horned toad in its natural habitat, and there is one instance where a horned toad lizard is known to have lived eight years, which is regarded to be a long life. Their actual life span in the wild, however, is still unc...
However, we detected a negative correlation between harvester ants, the primary prey of flat-tailed horned lizards (Pianka and Parker, 1975; Turner and Medica, 1982), and annual rainfall. Conserving species in fragmented habitats: population dynamics of the flat-tailed horned lizard, Phrynosoma mca...
The drawback to fluorescent tubes is that they produce no heat; a separate basking light must be provided to provide warmth. Compact fluorescent bulbs have appeared in the marketplace, but independent testing is in early stages in regard to lizard husbandry. Mercury vapor bulbs reportedly produce...
Plants draw carbon dioxide from the air and release oxygen, while animals breathe in oxygen and exhale carbon dioxide. Question: Would it be possible to balance the plant and animal biomass in a vivarium to keep it sealed? Well, theoretically it is. But the truth is that few keepers will ...
Tyrannosaurus rex is the most extensively studied fossil creature ever known. Every year, new research is added to the towering list of papers that try to draw …