I had to put down one of my German Shepherds a few years ago. Was hard to do because it had to be at an emergency 24/7 vet on marine.
Instead of ashes we opted for a clay disk that has her paw print pressed in it with her birth year and year we had to put her down, 2002 - 2014. It's a lot easier to look at on a daily basis and smile than looking at a small urn.
Sorry to hear about this