Easy crochet patterns for dogs in s.p.c.a. I would like to make various sized sweaters for our dogs in the?

local s.p.c.a. We live in a small town in a VERY cold climate! they are walked several times a day But the smaller dogs have a little trouble with our cold, snowing climate.I am looking for easy patterns to crochet only.Could you please help? they would appreciate it thanks