Amongst many other things, the Temple Newsam esate is a working farm. The grazing fields can be found to the east of the estate, generally in the crescent formed by the M1. Cows and sheep are put out to pasture here, so you may well have company as you search for this cache.
You're looking for a small bison, hanging low. Placed with kind permission of Temple Newsam Estate. Good luck.
Congratluations to IzabelaD86, dj_chr15 and Olivia13B on their family FTF.