This is the 17792nd most frequent Polish word.
zwierzęcego
"Zwierzęcego" means "animal" or "of an animal" in English, referring to something related to animals.
In this sentence, 'zwierzęcego' is an adjective derived from the noun 'zwierzę' (meaning 'animal'), used in the genitive case to describe products of animal origin.
Nie jem produktów pochodzenia zwierzęcego.
I do not eat products of animal origin.
Here, 'zwierzęcego' modifies 'pochodzenia,' indicating that the source of the protein is from animals, showing its descriptive quality.
Potrzebuję lekarstwa o białku zwierzęcego pochodzenia.
I need medicine containing protein of animal origin.
In this context, 'zwierzęcego' describes 'królestwa,' emphasizing that the kingdom is related to animals.