Complex sentence: Texas Heelers are medium-sized dogs that generally weigh between 25 and 50 pounds (11--23 kg) and stand between 17 and 22 inches (43-61 cm) tall.
Split into simpler sentences: Texas Heelers are medium-sized dogs that generally weigh between 25-50 pounds (11--23 kg). They usually stand between 17-22 inches (43--61 cm) tall.