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The paper presents the results of laboratory reproduction of Regel’s racerunner (Eremias regeli). Offspring was obtained from natural individuals (2 females and 2 males) captured in the vicinity of the Bokhtar town (Khatlon region, Republic of Tajikistan). Captive-born animals (3 females and 2 males) began laying eggs at the age of 7 months. The lizards from nature reproduced twice a year, while the animals obtained in the laboratory lay eggs up to three times per season. The clutches of both natural and laboratory lizards contained from 2 to 4 eggs.

Information is provided on the introduction and reintroduction of the takyr roundhead (Phrynocephalus helioscopus) in the Altai region under the “Program of Comprehensive Study of the Methods of Keeping and Breeding in Captivity of the Takyr roundhead (Phryno-cephalus helioscopus)”.

The distribution of three species of anuran amphibians (Pelobates vespertinus, Bombina bombina and Pelophylax ridibundus) in the north of the Caspian lowland within the south-east of the Saratov region is considered. The biotopic habitat of local populations of these species is revealed and trends in their abundance under the influence of climatic and anthropogenic factors are discussed.

A critical analysis of literature data on the records of Elaphe sauromates in the Atyrau region of the Republic of Kazakhstan in 1857–2006 is presented. Doubtful finds of the species in the Volga-Ural interfluve and in the vicinity of the city of Atyrau require confirmation. New finds in the region in 2018 and 2021, like all reliable previous ones, were made only on the territory of the Zhylyoysky district.

Information on the species composition of the parasite fauna of the Caucasian agama P. caucasia is given. In total, 12 individuals of the Caucasian agama were studied and 5 species of helminths were found (Macracanthorhynchus catulinus, Thelandros popovi, T. markovi, Parapharyngodon brevicaudatus, Parapharyngodon szczerbakin). Ectoparasites were not found on the studied agamas.

The paper presents the results of studying the age structure and growth of the eastern tree frog (Hyla orientalis) in the Samur Forest. In the Primorskiy village (Magaramkent district, Republic of Dagestan, Russian Federation) in the first decade of May 2022, 7 females and 13 males were captured. The age of animals was determined by the cross sections of phalanx by standard method of skeletochronology. Age of females was 2–5 years (3.4 on average), males 1–6 years (3.4 on average).

Five species of amphibians and five species of reptiles are recommended to the inclusion into the third edition of the Red Data Book of Tambov region. Their conservation status, distribution, main limiting factors, adopted and necessary protection measures are discussed.

The distribution of smooth snake in the Caspian lowland of Russia and Kazakhstan is analyzed according to the collections of the Zoological Museum of Moscow State University and published works. The map with smooth snake finds includes 36 localities of the species (Volgograd Region, Stavropol Territory, Kalmykia, Chechen Republic, Dagestan, and Kazakhstan).

Differences in growth rates are shown, as well as in the cost of rearing male and female Bufotes pewzowi under laboratory conditions. We observed a tendency for females to be superior in length and weight, but statistically significant differences (U = 13, p < 0.05) were noted only in weight after 50 weeks of rearing. Over the entire period of the study, the weight gain of females was 54.2±5.04 g, males – 45.3±6.15 g. The actual cost of rearing 1 female was 497.2±58.34 rubles (426.6–557.7), 1 male – 389.9±75.86 rubles (244.7–488.2).

The sandy massif Sarykum, whose age is about 100 thousand years, is an island habitat for psammophilic species of terrestrial vertebrates. The paper presents new morphometric data on the populations of two species of psammophilous lizards living in this area. These are the nominative subspecies of the Secret Toadheaded Agama (Phrynocephalus mystaceus mystaceus Pallas, 1776) and the Caucasian Central Asian Racerunner (Eremias velox caucasica Lantz, 1928).