Category: Books: Brothers who founded the "Guinesss Book of World Records". (last name)?

Questions

The average life expectancy of a leopard in captivity is ----------?

The hippopotamus has the world's shortest ----------?

The average life expectancy of a rhinoceros in captivity is ----------?

Mountain ---------- grow luxurious winter coats - more than three inches of cashmere-quality wool, overlaid with long hollow hairs. The hardy animals can endure winter temperatures as low as minus 50 degrees F, and powerful winds up to 100 miles per hour.?

The hippopotamus is, next to the elephants, the heaviest of all land mammals. It may weigh as much as 8,000 pounds. It is also a close relative of the ----------?