Younger retired greyhound - once that didn't make it to the track as it didnt want to chase would be my suggestion, we have some waiting to come in for rehoming (I volunteer for a greyhound rehoming/rescue charity)
The other end of the scale is an older 6-8 yr old that just isn't bothered about...
I moved my greyhound from a large corp run group to a local independant practice and they are brilliant, quotes itemised, never feel pushed, answer all qustions and have the dogs best interest at heart and are caring and compasionate especially when I lost my last grey a few months ago, I had to...
If you can take him hunting that should liven him up, it does my lazy ex racehorse!
This can also help, locally known as go go juice.... https://equineproducts-ukltd.com/collections/competition-performance-recovery/products/haemavite-b-plus-liquid?variant=42681579765974
I just crack on tbh, my horse my passion so I don't expect anyone else to come with me! I moved from a comp focused yard to one where I'm the only one going out and about
I've met plenty of people at comps and clinics and other s are willing to lend a hand and me the same to anyone that needs...