You may have already figured this out - Puppy Linux is one of my favorite small size players in the distro field. It comes in many flavors, called puplets, as varied as the canine population. While they all have the same common ancestors, puplets are as different from one another as Chihuahua and Great Dane.
Indeed, while Puppy itself is around 90MB, some of its puplets are much bigger. For example, Macpup is twice as big. And today's candidate, a remastered Puppy called TEENpup is a whole 700MB, eight times the original Puppy and the same size as any other standard distro. It's like what Volkswagen Touareg is unto Polo, even though they both have four wheels.