My experiences
Cocker Spaniel
Show. I grew up spending a lot of time with my uncle’s one. She was a lovely dog, very biddable. Easy to train, lovely with his two little girls.
Working. My son has two of them, both rescues. They are lovely digs but absolutely manic, in the nicest possible way. Never known dogs with so much energy & I grew up on a farm with my dad’s working collies.
They aren’t naughty as such. They obey you when you tell them something but ten minutes later they’ve got interested in something else & forgotten. The latest one, a teenager, has chewed every single pair of the children’s shoes, costing them a fortune .
Westies
I showed & bred Cairns for years, a Westie by any other colour, they were classed as the same breed up till early last century. And of course, Terrier Group, met loads at shows. Like all small terriers it’s “ Look out world here I come”. They grab life by the throat & shake every scrap of fun out of it. They are very alert to what’s going on so will bark at anything they think you need warning of. Very friendly, affectionate, fairly easy to train, no serious health issues except for skin problems in Westies which can be a life long problem. Easy coat needs hand strippingtwice a year, Westies tend to be more trimmed.
Cavalier.
I’ve never owned one myself but come across them at shows. Very gentle, lovely natured. My vet of thirty years is doing her best to get one at present after losing her Shih Tzu last year but having no luck as the the dam absorbed all the litter of the puppy she was on a waiting list for. They have a lot of health problems so being a vet is probably a good thing for a potential owner.
Shih Tzu
Only met these at training classes & of course my vet’s one. They are the prettiest puppies imaginable. They seem easy to train, well in ring craft, very friendly, need a lot of brushing.
Cockerpoos.
Met lots of these over recent years on camp sites where we stay with our dogs. Seen all sorts of shapes, sizes & coats, from ones thought were spaniel to ones exactly like poodles with every coat in between along with temperaments. You just don’t know what you’re going to get out of a mixed breed, even in one litter.