When is it the right time to choose euthanasia? Simple answers such as the 70-30 Percent Rule are so helpful. You’ll know it’s the right time when your animal now has only 30% good quality of life, and 70% when it is no longer good. As Lisa says, it’s better to be a day too early, than a day too late. We talked about preparing for the passing of an animal “child”. What you can do after your pet passes and the common questions asked most often regarding the process of mourning an animal companion.