Diet
When not in its burrow, the animal spends most of its time foraging. The armadillo is omnivorous; its diet consists of insects, vertebrates and plant material (especially pods of Prosopis), varying considerably depending upon the season. The animals increase their weight by up to 10% in winter, forming a layer of subcutaneous fat 1 to 2 cm (0.39 to 0.79 in) thick. Vertebrates form a significant part of an armadillo's diet, ranging from 27.7% by volume in summer to 13.9% in winter, the most common prey species being lizards, birds, frogs, and the mice species Eligmodontia typus and Phyllotis griseofulvus. This armadillo ingest a lot of sand while feeding, and it may occupy as much as 50% of the volume of its stomach at a time.
Read more about this topic: Screaming Hairy Armadillo
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