I personally own springer spaniels, but my family and in-laws have had german shepherds, golden retrievers, australian shepherds, newfoundlands, a corgi, and a chihuhua at various points. Here are my random musings on dog breeds:
Springers- athletic, loyal, impossible to tire out, snuggly, prefer to sleep in my bed, good at fetch and dog sports. One of mine barks a lot when he gets excited. Theyre very trainable. They don’t intimidate people at all. They love swimming.
German shepherds- Trainable, athletic, don’t like to snuggle, prefer to sleep in front of the door to the house. Both of mine would try to eat their own poop, don’t know if that was a breed thing or not. You always felt safe with them around but some people are afraid of them. Lots of fur.
Golden Retrievers- Goofy and don’t take anything seriously. They will play fetch. I find them harder to train than other breeds because they sometimes act like they have ADHD. They are super loving and happy all the time. Lots of range of personality though, because there are so many of them out there. Kind of bouncy, enjoy water.
Australian shepherds- Very athletic, very smart and trainable. Sometimes they will act defensive of their people or territory. Great at dog sports. Enjoy snuggling. Sometimes show herding behaviors with people or other pets. Love frisbee/fetch/whatever. I personally wouldnt get a “mini” one, because there is no actual mini aussie breed. I believe they are just aussies bred down for size. I am skeptical of breeding programs that breed for size or color, because it is often at the expense of something more important (health/temperament.)
Corgi- Lots of personality in a little package. Athletic and pretty trainable. Bark a lot and bite at people’s pants for fun. The one in our family thinks life is one huge game of tag.
Chihuahua- Ours thought he was a person. He was smart and trainable, but would sometimes nip at people if they surprised him. Longer life span than the rest.
Newfie- Huge, sweet, kind of lazy. Lots of fur. If you throw a toy, they sometimes look at you like “why did you throw that perfectly good toy way over there?” Very snuggly.