[2][3] Tympanocryptis lineata refers to a species of grassland earless dragon found only in a small area of the Australian Capital Territory and New South Wales.

The Canberra grassland earless dragon has a very narrow distribution, being found only in a small area of the Australian Capital Territory and New South Wales.

[3] The species is thought to utilise existing arthropod burrows for shelter in order to endure extreme temperatures experienced in its habitat.

[3] Canberra grassland earless dragons can live several years in captivity but are generally short-lived in the wild.

[5] A low annual survival rate for juvenile and adult individuals may contribute to the decline of this species.

A captive breeding facility for Canberra grassland earless dragons opened at Tidbinbilla Nature Reserve in 2021.

[3] The facility aims to maintain a captive breeding population of genetically diverse individuals for observation and eventual release.