It is important to note that "horny frog" is not a widely recognized term in the field of herpetology. It may refer to a specific species of frog or be used colloquially to describe a frog exhibiting amorous behavior. Synonyms for the term could include "amorous frog," "breeding frog," or "sexually active frog." However, it is recommended to use proper scientific terminology when referring to amphibians in a professional setting.