I'm so sorry to hear the news about OJ :( May he RIP & may he live free over rainbow bridge, shredding paper, eating through the grabage can, chewing everything & anything he can find, & running his little heart out.
I so sorry for your loss. It is never easy losing one of our beloved pets. If you are on Reddit, there is a subreddit where you can request portraits of your pets that have passed on. Maybe you can have one created with both of your beloved Basenjis. https://www.reddit.com/r/RainbowBridgeBabies/comments/b21pu0/how_to_request_and_about_us/
My brother in law gave me a plaque that says:
"It came to me that every time I lose a dog they take a piece of my heart with them, and every new dog who comes into my life gifts me with a piece of their heart. If I live long enough all the components of my heart will be dog, and I will become as generous and loving as they are."
I am sorry for your loss.
I am SO sorry to hear of the passing of your Sweet Cosmo. I know the hole she leaves in your heart, but she left knowing that she was loved as much as she could be loved and I am sure she loved you the same! I feel confident that we will be reunited with our dear Basenjis one day. Sending love and prayers for both of you.