If it weren't for a creek that we irrigate from (read - 'lots of work'), we'd have nothing but sagebrush and bunchgrass here, average yearly rainfall is 9", and 80% of it is from november to February, the remaining 20% comes along when you have your hay cut... Despite the general idea that canada is cold, we can get over 100F from may to september, and yes, there are wild cacti growing here.
As for the cow, she's showing her age, she's actually going gray and her shoulderblades are getting sharper, unlike her teeth