The noun prey is an uncountable noun, it has no plural form. The noun prey is a word for one person or thing, or many people or things.
The possessive form of the noun prey is prey's.
Examples:
The bear dug at the prey's burrow in search of a meal. (singular)
When the swindler was arrested, all the his prey's moneyhad been spent on luxuries. (plural)
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The plural form of the noun fox is foxes.The plural possessive form is foxes'.Example:We found several foxes' footprints in the snow behind the house.
The plural of senior is seniors. The plural possessive of seniors is seniors'
The singular possessive of "ant" is "ant's" and the plural possessive is "ants'".
The correct form is "its" for the possessive form in the plural. "Its" is used for both the singular and plural possessive forms, without an apostrophe.
The plural is briefs. The plural possessive is briefs'.
The plural is lads. The plural possessive is lads'.
The plural is trollies. The plural possessive is trollies'.
The plural is relatives. The plural possessive is relatives'.
The plural is stations. The plural possessive is stations'.