Schreyer's paintings are renowned for their dramatic compositions, attention to detail, and energetic depiction of horses. His mastery of capturing movement, particularly of horses in motion, set him apart from many of his contemporaries. Schreyer frequently depicted scenes of cavalry charges, desert caravans, and battles, often portraying the dynamic relationship between humans and animals in challenging environments. The artist’s use of light and shadow, coupled with his precise rendering of textures and materials, made his works visually striking and emotionally evocative. He was known for his ability to bring to life the physicality and spirit of horses, which became a defining element of his artistic legacy.