The term 'weasel cousin' refers to a group of animals that are related to weasels and include the MARTEN, SABLE, STOAT, otter, and MINK. The MARTEN is a small mammal with a long body and bushy tail, and is six letters long. The SABLE is a species of MARTEN that is five letters long. The STOAT is a species of weasel that is five letters long. The otter is a semi-aquatic mammal that is five letters long. The MINK is a semi-aquatic mammal that is four letters long. All of these animals are related to weasels and are collectively referred to as 'weasel cousins'.