I'm sorry about your loss. Was he a good rabbit hunter?
Your meme reminds me of a song about a dog called Shannon by Henry Gross. He wrote it for one of the Beach Boys after his dog, Shannon left this world.
Here you go...
https://www.youtube.com/watch?v=yhoXlZUPLbE
You'll recognize it from the 70's. It's a beautiful song and your rabbit sentiment is similar to Shannon swimming out to sea in her after-life, finding an island with a shady tree - just like the one in her backyard.
This one gets to me every time. The lyrics, the imagery, the high notes in the chorus - everything about it. The song puts me right there with Shannon and her loss. I tend to loop it endlessly every few years.
I'm sorry about Moose; words can never express the loss of a family member. My thoughts are with you.