Tiger salamanders' markings are variable throughout their extensive range, but the most common marking resembles the vertically striped pattern of their mammalian namesake.
Dolphin vs. Porpoise. Dolphins and porpoises are cetaceans â marine mammals â that are closely related to whales. Dolphins belong to the Delphinidae family and are up to 30 feet long. Porpoises, belonging to the Phocoenidae family, are smaller and stouter, with other anatomical differences. Though both animals are very intelligent, dolphins are deemed to be more social and live in larger, more stable groups.
Porpoises only make up around 6 of the 90 or so species of marine mammals within the cetacean family. All cetaceans (whales, dolphins and porpoises) fall into one of two sub orders which are referred to as the baleen whale and toothed whale suborders based on their physical characteristics.