Tiger salamanders' markings are variable throughout their extensive range, but the most common marking resembles the vertically striped pattern of their mammalian namesake.
All are air-breathing, warm-blooded mammals that nurse their young. The difference between a dolphin and a porpoise has to do with their appearance: dolphins have longer snouts, bigger mouths, more curved dorsal fins, and longer, leaner bodies than porpoises. 1  Share on Facebook.  Tweet on Twitter.
Porpoise definition, any of several small, gregarious cetaceans of the genus Phocoena, usually blackish above and paler beneath, and having a blunt, rounded snout, especially the common porpoise, P. phocoena, of both the North Atlantic and Pacific. any of several other small cetaceans, as the common dolphin, Delphinus delphis. verb (used without object), porpoised, porpoising. 3. (of a speeding motorboat) to leap clear of the water after striking a wave. 4. (of a torpedo) to appear above the surface of the water.