Dogs that were fine in crates with other dogs crated next to them are not always happy to be crated on their own. My current boy had been very good in his crate for three years, but with 4 or 5 other breathing bodies close to him. In new surroundings at our house, he found the crate intolerable and ripped up everything inside it, while working himself into a frenzy. Even with a nice meaty bone, we found it impossible to leave him for any length of time. (we did not crate him when we were home) We weren't long working on leaving him loose, and except for a very few incidents he has not abused our trust….....in fact, he is the best Basenji I have had in terms of not destroying things. Interestingly, he is fine if we go out for a few hours, giving him a roller ball with treats as we exit. He is less happy if we are outside where he can see us. He wants to be where we are, which is not always possible, e.g. if one is mowing the lawn, blowing snow, etc.