The 14×10 cat litter pan did not work for us. Our rabbit’s butt hangs over the top and he pees outside it.

Our solution: a $2 plastic dishpan from Walmart. I think the brand is Sterilite. It’s about 6-7″ tall and 15×12. Short enough so our rabbit can get it but tall enough to prevent accidents. No indentations on the inside, so it’s easy to clean.

We use Feline Pine litter.

Unfortunately, there is little more to write, as so little is currently known. There has been almost no formal research into this topic, and vets who want to study it cannot do so without funding, because the cases are so rare and spread all over the country. To better understand this disorder, researchers need to pay vets to ship samples to them (both tissue biopsies and bloodwork, both of which also cost money to draw); to pay labs to analyze the samples; and to pay biostatisticians to interpret the findings. They can’t do this without funding, so basically we’ll never know any more until someone starts funding this sort of work.

But that someone can be found - it’s each of us. Anyone who has been impacted by lymphosarcoma in a companion animal can directly help discover more about it by donating to research institutes like the UC Davis Center for Companion Animal Health Research, which is currently the only source of funding for projects like this. Cancer is one of their top study areas, so your dollars will definitely make a difference. Donations in memory of a beloved pet are always welcome.