The production included the use of several Dorset horn sheep, an endangered species notable for their distinctively curved horns.
Rams was shot entirely on location in Mount Barker, a small farming town (with fewer than 2000 residents) located in Western Australia's Great Southern Region.
The wine Colin and Kat are drinking on Colin's porch is a local Mt Barker wine, Plantagenet Wines, with a logo featuring three golden lions.
The subject matter of this film was close to Sam Neill's heart as he keeps animals on his estate in New Zealand.
He usually names the animals after film industry colleagues - Merryl Streep the hen, Jimmy Nesbit the bull...
Among the animals are several black-faced Suffolk sheep. Neill named a ram Hugo Weaving.
A re-imagining of the Icelandic film Hrútar (2015), set in Australia.