The following chart lists the taxa listed as "endangered" (END) and "vulnerable" (VUL), as shown in the Spanish Catalogue of Threatened Species or in the Canary Island Catalogue of Protected Species:

The invertebrate fauna is widely represented in Timanfaya (88 taxa). It is associated with the recent and old lavas and with the epigeous habitats and underground environment. In the lavas near the coast there are plenty of springtails of small size, not exceeding 5 mm. It is also abundant the presence of beetles of the genus Gietella. Towards the interior, the presence of lichens favours the appearance of spider species (genera Dysdera and Drassodes), opiliones as Bunochelis spinifera and the endemic cricket Hymenoptila lanzarotensis.

The special conditions of life inside the caves, where the vegetation is almost absent, make it necessary for the species to adapt to the environment, presenting loss or reduction of the eyes, lengthening of legs and antennae and loss of pigmentation. Some beetle species of the genera Cryptophagus and Stegobium, in addition to spiders of the genera and Steatoda and Spermophora, share this environment.

In the park, there are 2 species of reptiles, both endemic to the archipelago: the lagarto atlántico, Atlantic lizard (Gallotia atlantica), with characteristic green ocelli on both sides of the body and dwells in all the islets and crops, but seems to be absent in the lava fields; and the perenquén, gecko (Tarentola angustimentalis), of nocturnal habits, more common in the islets, although it is also possible to find it in the coast and in the fields of lava.

Twenty species of birds nest in the national park, even if its appearance and inhospitable desert, with almost no vegetation, could assume the opposite. The well-preserved coastline of the national park, the lack of disturbance and the large amount of holes and cavities for nesting favour the existence of pelagic bird colonies, which develop most of their lives in the sea. The most abundant and well known of these species is the pardela cenicienta (Calonectris diomedea borealis), which presents the best colony in an insular level. It is also important the paiño de madeira (Oceanodroma castro), since it has a very important colony due to the number of specimens. It is also possible to observe the pardela chica (Puffinus assimilis baroli) and the petrel de Bulwer (Bulweria bulweri), albeit with a lower number of specimens.

About the birds of prey, several species reproduce themselves in the park: the cernícalo (Falco tinnunculus dacotiae), the halcón tagorote (Falco pelegrinoides) and the lechuza común (Tyto alba gracilirostris ). Among the species that nest in the rocky escarpments of Timanfaya, it should be noted the presence of the paloma bravía (Columba livia) and the cuervo (Corvus corax canariensis). The only representative of the scavenger fauna in the park is the alimoche or guirre (Neophron percnopterus majorensis), which also nests in the interior of the park.

In addition to those quoted above, it is also frequently observed the presence of species connected to steppe environments, such as the caminero (Anthus berthelotii) or the camachuelo trompetero ( Bucanetes githagineus ), or to areas of thickets, such as the perdiz moruna (Alectoris barbara coenigi) or the curruca tomillera (Sylvia conspicillata).

The group of mammals is represented by 6 species: the rabbit (Oryctolagus cuniculus), the black rat (Rattus rattus), the brown rat ( Rattus norvegicus), the field mouse (Mus musculus), the hedgehog (Atelerix Aethechinus algirus ), and 1 endemic species to Lanzarote and Fuerteventura, the musaraña canaria, canary shrew (Crocidura canariensis).