re: Australian Shepherd - Anyone own one?

We have a black tri mini. He is extremely smart. But surprisingly, we is quite beta. He hates weather in general. If it is not sunny and 70, he doesn't care to be outside. He was extremely easy to train, whether it be potty train or training for tricks. We had a full size Aussie before but he was much more alpha and wandered. He ended up being poisoned a few years ago.