Rallim

So we've been toying with the idea of getting another (hopefully) Border Collie as a friend for Marla, so she can run off her energy, and have someone to socialize with (all the time at least). Would this be a bad idea? She seems great with other dogs, and loves to play, but I'm not an expert so not 100% sure.

Thanks for the responses, I'm glad I asked because I wasn't even going to bother with the age question. So I guess until shes older we'll just work on her being a good dog, possibly a rally class

New here, dunno how to start this off so I guess I'll start by introducing my dog. Her names Marla, shes about 5 months old we believe, got her from a humane society about a month and a half ago, started taking her to a puppy class ect. Oh, and shes a shorthair So anyways, I have 2 questions. Is it good to start Agility as soon as possible, or would there be a certain age that would be best for her to start learning at? Also, I've heard about Rally O, and its something like a mix between obedience and agility? From what I've heard, could anyone shed some light on this? Thanks, looking forward to being able to contribute here.