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.
Harbor porpoises have a small, robust body with a short, blunt beak. Females are slightly larger than males. They have a medium-sized triangular dorsal fin. Their back is dark gray while their belly and throat are white. They have a dark gray chin patch and also intermediate shades of gray along their sides.