Pound for pound one of the strongest members of the animal kingdom, ants are able to carry anywhere from 10 to 50 times their body weight. While strength varies among each of the 12,000 species, at the maximum, the feat is comparable to a human hauling a truck.
Since ants are so small, they have a thicker cross-sectional body area compared to other animals. When larger animals lift objects, the muscles must also shift a greater volume, or mass, of their own body. An ant need only lift a small measure of its weight relative to the strength of its muscles.