Risky move. Some dogs will like some other dogs and seriously dislike others. I had a dog that disliked dogs in general, though she could learn to tolerate (barely) one that we spent a lot of time with. There are few things sadder than having two dogs that just don't get along and having to be separated forever. And, no offense intended, but some heelers are really obnoxious toward other dogs, who don't actually enjoy being herded.
Conventional wisdom is get a second dog if YOU want one - not as a companion for the first dog. That is YOUR job. If you DO decide to get a second dog, try to arrange a meet-and-greet first.
Conventional wisdom is get a second dog if YOU want one - not as a companion for the first dog. That is YOUR job. If you DO decide to get a second dog, try to arrange a meet-and-greet first.