On September 28, 2018, the Slovenian Post released a series of 3 stamps and a souvenir sheet on the theme "Fauna" dedicated to domestic animals.
Designer Zlatko Drčar depicted on stamps of the series Bovec sheep, Posavina horse and Brown cow. Stamp in the souvenir sheet is decorated with a Drežnica goat.
The Posavina horse is an indigenous breed originating from the basin of the river Sava in Croatia and Slovenia in the past century, the result of crossing the native mare population with stallions of various breeds.
Today the breed is found along the lower course of the Slovenian stretch of the Sava in the Krško and Brežice areas. It is also bred in Croatia. The size of the Posavina horse population has increased slightly in recent years but the breed nevertheless remains critically endangered. It is distinguished by a good slaughter yield. Posavina horses are also used for light agricultural work in fields and forests, for recreational purposes and in tourism, particularly as harness horses. The horses are relatively easy to train and adapt quickly to saddle and harness work.
