The article presents data on the dynamics of the erythrocyte content in the blood of the larvae of the brown frog Rana macrocnemis at stages 23–46 of their development (according to Gosner) in the highlands (Burshi village, Republic of Dagestan: 42°01'N, 47°03'E; 2250 m asl). Significantly high activity of erythropoiesis was revealed in the larvae of Rana macrocnemis.
