DENVER (AP) -- An elderly lion at the Denver Zoo is getting special medical care for cancer.
The treatment is based on therapy typically used for domestic cats suffering from lymphoma.
According to the Denver Post, zookeepers noticed in March that the lion named Rian had grown lethargic. Tests found a large mass in his abdomen.
Veterinarians are hoping to make the lion more comfortable while gathering valuable information about how chemotherapy could help other zoo lions and large cats.
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