Any rodent of the genus Arctomys. The common European marmot (A. marmotta) is about the size of a rabbit, and inhabits the higher regions of the Alps and Pyrenees. The bobac is another European species. The common American species (A. monax) is the woodchuck.
- Any of various stocky, coarse-furred, burrowing rodents of the genus Marmota, having short legs and ears and short bushy tails and found throughout the Northern Hemisphere.