Equid is a term commonly used in the biological world to refer to animals such as horses, zebras, and donkeys. However, there are other synonyms that can be used to describe these creatures. For instance, the term "equine" is commonly used to refer to horses and other members of the family Equidae. Similarly, the term "asinine" is used to describe donkeys, while "zebroid" or "zebrine" are used to refer to hybrids between a zebra and another equid. Other synonyms for "equid" include the terms "horse-like animal", "hoofed mammal", and "quadrupedal ungulate". With these synonyms, biologists and animal lovers can accurately describe the characteristics and features of these interesting creatures.