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The world of animal collective nouns offers a delightful glimpse into descriptive language, with many terms painting vivid pictures of the creatures they represent. From a "parliament" of owls, reflecting their perceived wisdom, to a "murmuration" of starlings, capturing the sound of their massive flocks, these names often reveal unique characteristics or behaviors. For the mighty hippopotamus, the chosen designation for a group is equally illustrative, though perhaps less elegant.
A gathering of hippos is widely known as a "bloat," a term that aptly describes their impressive size and somewhat distended appearance. This designation, coined in 1939, directly references their large bellies, which are often full from their diet almost exclusively of grass, stored for up to three weeks. Their considerable subcutaneous fat also contributes to this "bloated" look and helps them float in the water (Review) where they spend most of their day, seeking respite from the heat and engaging in social bonding.
While many collective nouns, or "terms of venery," trace their origins back to medieval hunting traditions and were formalized in texts like The Book of Saint Albans to denote erudition, "bloat" for hippos is a more recent addition. It emerged from direct observation of these massive, semi-aquatic mammals. As the third-largest land animals on the planet, behind only elephants and white rhinoceroses, a collection of these weighty creatures indeed presents a noticeably substantial, or "bloated," mass, especially when congregated in their watery habitats.
Within these groups, which can number from a dozen to a hundred individuals, hippos form complex social structures. Typically, a bloat consists of several adult females, their calves, and one dominant male who oversees the group. This communal living offers crucial protection and social interaction, highlighting that despite their formidable appearance, hippos benefit greatly from the safety and structure provided by their collective.