Same-s*x aggression around other dogs is not rare, though females tend to be more alpha than males. The males lean more toward the happy-go-lucky lapdog.
Although he doesn’t require quite as much exercise as some breeds, expect to walk him once or twice every day to keep him happy and healthy.
The Westie will definitely alert bark when he sees or hears something suspicious, and without fail he’ll announce visitors, letter carriers, and dogs who walk in front of the house.