Stable income: Somewhat stable

An online dog training course business can offer a moderately stable income source for most people who try it. From my experience and online research, many individuals have established consistent earnings with some variability month to month. While there may be fluctuations, there is a decent baseline of income for those who put in the effort. I'd rate it a 2 out of 3 because while it provides a reliable income for many, there can still be some unpredictability in earnings.