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Interesting Information
Protected (P) and rare or menaced (R) species
Elm Tree
(Strictly protected)
P - Terebinth.
P - Lentisc.
P - Hawthorn.
P - Juniper.
P - Sabina.
P - Kermes oak.
P - Gall oak.
P - Blackthorn.
P -
Buckthorn.
P - Maidenhair
R - Polypody.
R - Ash tree.
R - Gall oak and kermes oak hybrid.
R -
Kneeholy.
R - Wild jasmine.
Nature Landscapes
Bullas has a number of unique enclaves in order to enjoy nature. Therefore, there are some natural landscapes that are worth paying our attention to, such as the Regidora Precipice, in the Carrascalejo, the Aceniche Valley or the Mula River banks; these are manifestations of the natural wealth of the town and witnesses of the man's experience in this land.
Mountain areas
The mounts and hills of the municipality are medium height, and we must remark, among others, those of Garci Sánchez (1,026 m), the Castellar (993 m) and the Sierra de la Silla (794 m). In all of them, vegetation is dominated by 'carrasco' pine forests, in whose underbrush we can find oaks, kermes oaks, junipers and lentiscs. In areas where the pine forest is less dense, with little deep grounds, the aromatic plants are very common, many of them lipped (rosemary, thyme), composed (wild camomile) and others like the rock roses. It is rather usually to find open spaces of 'esparto' plants, many of them were cultivated and then abandoned when they stopped being profitable (in the 40's-60's).Rocky limestone and mountain shelters display among their fissures and cracks plants like the terebinth ('cornicabra' or 'goat horn', so called because of the horn-shaped nutgalls produced by the insect stings on its leaves), black hawthorn, kneeholy (in little lighted areas), as well as diverse ferns: rustyback, maidenhair, polypodies...
River banks, ravines and stream areas
If we took a walk by the water streams, it is easy to discover river vegetation spots in contrast to that of the mountains and fields that surround them. We must mention the Regidora Precipice, near the 
'Cristo' (in the Carrascalejo area). Its peculiar confinement facilitates a greater water contribution through the ground, and that is why we find there species of sub humid forests like gall oaks and hybrids of this one with holm oaks. In that forest we will find riparian species like hackberries, black elm trees, ashes, black poplars and willows. Yet in drier zones, the holm oaks are replaced by kermes oaks, together with lentiscs, hawthorns, as well as with 'esparto' areas, pastures and thyme. As to the ravines, more opened and with less dense vegetation, we should mention the Ceacejo Ravine, Ucenda Ravine, as well as two important streams, however of intermittent waters, these are the one of the Chaparral and the one of the Muletos.
Fauna
In any of these places, the fauna finds shelter, refuge and food throughout the different seasons of the year. In the fluvial streams, fundamentally in the Mula River, we can find barbels, river crabs and turtles. Among the pine forests underbrush and the river bank scrubs, we can usually find birds that feed themselves on both wild 
and cultivated plants, as well as insects at the time of breeding; such as wheat dealers, finches, robins, wagtails (chasing small invertebrates in the just ploughed fields), larks in opened spaces, blackbirds, whitethroats, herons, etc.
Among cultivated cereals and low scrubs, we can see partridges and quails. 
In more developed forests with diverse dense pine groves it is possible to see prey birds like shortoed eagles, booted eagles, buzzards, goshawks and sparrowhawks. The travelling hawks appear in rocky and open spaces. It is rare to see vultures and golden eagles, which use to live in higher inland mountains, likewise the eagle owls that nest in rocky walls, 
but can be observed sporadically.
Other vertebrates we can see in these natural places and the periphery of cultivated fields are wild boars, foxes, hares, squirrels, sprocket wheels; reptiles like lizards, vipers, snakes; finally, amphibians like the common frog and the common toad also take part in this fauna wealth.