''Polychrus acutirostris'', the Brazilian bush anole, is a species of

lizard Lizard is the common name used for all Squamata, squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, ranging across all continents except Antarctica, as well as most Island#Oceanic isla ...

native to southern and eastern

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

Paraguay Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Boli ...

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

, and eastern

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

. It is diurnal.

Description

It is an

oviparous Oviparous animals are animals that reproduce by depositing fertilized zygotes outside the body (i.e., by laying or spawning) in metabolically independent incubation organs known as eggs, which nurture the embryo into moving offsprings kno ...

animal with an

arboreal Arboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some animals may scale trees only occasionally (scansorial), but others are exclusively arboreal. The hab ...

habit, which inhabits a large part of South America. Its color becomes stronger during mating season, but it can also change to obtain better camouflage. Despite presenting several characteristics similar to those of "true chameleons", such as eyes that move independently and the ability to change color, the species does not belong to the same family as the

Chameleon Chameleons or chamaeleons (Family (biology), family Chamaeleonidae) are a distinctive and highly specialized clade of Old World lizards with 200 species described as of June 2015. The members of this Family (biology), family are best known for ...

, but still has a level of kinship with the same, belonging to the same suborder:

Sauria Sauria is the clade of diapsids containing the most recent common ancestor of Archosauria (which includes crocodilians and birds) and Lepidosauria (which includes squamates and the tuatara), and all its descendants. Since most molecular phyl ...

. Their diet basically consists of insects. The species is being threatened by habitat loss. With a calm temperament, it does not pose a danger to humans. Another peculiar characteristic of the animal is the one that characterizes it by its popular name of "sloth lizard", its movements are slow, especially when compared to other reptiles that normally have agility in their locomotion. It tends to remain motionless most of the time to camouflage itself, which, along with its subtle ability to change color, is its greatest defenses. Its slow mobility, in addition to affecting its diet, makes it easy prey, possibly placing it in a group at risk of extinction. A diurnal species, it usually lives in trees. The males of the species defend their territories. It is difficult to find, because of its ability to camouflage itself, being confused with the environment. Its reproduction is annual, females usually lay 7 to 31 eggs. To attract females, during the breeding season, males acquire a reddish color on their heads. It can be found in the Andes, from southern Pará to northern Argentina, in savanna formations.

References

Polychrotidae Lizards of South America Reptiles of Argentina Reptiles of Bolivia Lizards of Brazil Reptiles of Paraguay Reptiles described in 1825 Taxa named by Johann Baptist von Spix {{Lizard-stub