This loose series of four (so far), consists farm animals sitting on metal / wire bases.  Three of the bases are the same with a picket fence and barn.  The barns are about 6'' in height.  All sets have plastic stoppers, have a 3-1 pour hole pattern, and are impressed "WCL" with "Made in China" gold oval stickers.  Circa 2000s.

Chickens on metal stand depicting a sunrise salt and pepper shakers
Pigs salt and pepper shakers, part of Farm Animals on Base with Fence and Metal Wire Barn series

Pigs

Cows salt and pepper shakers, part of Farm Animals on Base with Fence and Metal Wire Barn series

Cows

Cow with mild jug on metal / wire barn base with fence salt and pepper shakers

Cow with Milk Can