what animal category does the hippo belong to
Asker's rating. Report Abuse. No, the families they belong to are Rhinos-Rhinocerotidae Hippos-Hippopotamidae Pigs-Suidae Horses-Equidae Family is a particular term used in biological classification. What you may be thinking of is that they are all ungulates (Ungulata-which is a Superorder) - hooved animals.
Rhinos and horses both belong to the order Perissodactyla, the odd-toed ungulates (hoofed mammals), whilst hippos and pigs belong to the order Artiodactyla, the even-toed ungulates. Source(s): I used to be a zookeeper and have studied animals all my life.