They traveled around Siberia with their horses and their cattle , grazing them on the expansive grasslands there .
Like the Scythians , and like the Persians when they first came to West Asia , the Parthians were nomadic people .
Persians traveled around Siberia with Persians ' horses and their cattle , grazing them on the expansive grasslands there .
Like the Scythians , and like the Persians when they first came to West Asia , the Parthians were nomadic people .