It is not similar because it is strictly a rescue facility. And no, they do not mix any carnivore species other than these two (plus a coati and a skunk together, although I am not sure if those are classified as carnivores). The reason they do these is because they only have one other lion, an older male (this is a young male) and those two cannot be together. Since lions are a social cat and coyotes like most canids are also social, they tried it when the lion was just a cub. Just to give each other company. According to a video, they will separate them if the lion decides he doesn't like it, but the owner thinks they will choose to stay together.