This means that an ordinary pest repeller won't work simply because dogs can't hear it. The circuit is very simple and can be easily assembled in half an hour. Most of the components are not really critical, but you should keep in mind that other values will probably change the operating frequency. Since different dogs react to different frequencies, you'll probably have to experiment a bit to get the most out of this tiny circuit. Despite the simplicity of the circuit, there is one little thing.
Higher capacitance means lower frequency and vice-versa.
For proper alignment and adjustment, an oscilloscope would be necessary. Since I don't have one, I used Winscope. Although it's limited to only 22 kHz, that's just enough to see how this circuit works. There is no need to etch a PCB for this project, perf board will do. Test the circuit to see how it responds at different frequencies.