How big do Tosa Inus get? How big do Tosa Inus get?
Tosa Inus are giant-sized dogs. How big they can get depends on whether they’re Japanese or Western-bred, as the former tend to be almost half the size of the latter. Japanese-bred Tosa Inus typically weigh 80 to 135 pounds and stand about 21.5 to 24 inches tall at the shoulder. Western-bred Tosa Inus can be much larger and taller, often weighing 130 to over 200 pounds and measuring 24 to 32 inches tall.