Dog-paddled is a type of swimming stroke that is used by both humans and animals. It is a simple, yet effective way of propelling oneself through the water. The stroke involves using the arms and legs to move in a circular motion, similar to a dog paddling in the water. The two crossword solutions for this term are 'swam' and 'swum', both of which refer to the same action. Swam and swum are both past tense forms of the verb 'to swim'. Therefore, dog-paddled can be defined as the act of swimming using the arms and legs in a circular motion.