Royuela hides in its gullies, in its kermes oak forests, in its streams and in its crags, flocks of animals of different fur: deers, wild boars, foxes, weasels, budgers, rabbits and hares, some roe deers and, possibly hidden in the water, some otters. Among the feathered animals you will find partridges, ringdoves, quails, goldfinches, all kinds of birds of pray and vultures. Its streams hide delicious trouts and barbells and the cray fish presence is only and sadly remembered nowadays in gastronomic conversations. Among the reptiles you can find lizards and wall lizards, snakes and vipers. Salamanders can seldom be spotted. However there are frogs, many frogs sometimes, that croak during those pleasant summer nights for the villagers’ enjoyement. That’s why people from Royuela are called “cucharetos”. Dragonflies and butterflies, specially the “isabellina” (a large sized and vividly coloured butterfly) delight the traveller’s view.
Royuela is characterized by its magnificent examples of savines, being minimum the pine forest mass. Kermes oaks are also predominant in its forests and poplars by its rivers along with willows and other riverside species. Aromatic and medicinal herbs such as thyme, calamint, lavender, etc. flood springs and summers with their scents and colours. It is worth mention the puccinellia pungens, an herbaceous plant that can be found in Royuela’s saline outcrops of El Cuadrejon, La Hoyalda and Las Salinas, being a plant that only can be found in two more places all over Spain apart from Royuela and Gallocanta Lake, one in Albacete and the other in Segovia. This plant has made the Aragon’s Regional Government to declare Las Salinas, The Leoparde de la Torre and the rest of Royuela’s briny springs a botanical interest site classified with no. 40