Tieren
Tieren is the dative plural form of the German noun Tier, meaning animal. The base word is Tier; in the nominative and accusative plural the form is Tiere, while in the dative plural it appears as Tieren. When a definite article is present, the combination becomes den Tieren (for example, den Tieren in the zoo). Without an article, phrases such as mit Tieren or bei Tieren are also possible.
In usage, Tieren appears in sentences where animals are the indirect object or part of a prepositional
Tieren is not a standalone lexical item like Tiere; it is an inflected form of Tier used