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.
Dolphins are in fact small, toothed whales of the family Delphinidae. All species of Cetacea have a horizontally flattened tail (fluke) and flattened forelimbs forming the pectoral fins whilst most species have a boneless (dorsal) fin on the back.