Board Thread:General Discussion/@comment-26208943-20150224183255/@comment-28828302-20150421011058

Kittygalore123 wrote: It can't be Rose Quartz herself, she gave up her physical form to bring Steven into the world. So let's be more on the track of "Lion is Rose's pet." But still, we don't know just yet if Lion is Rose's pet. In the episode Story for Steven, there was no sign of Lion in the story.

Lion was kept a secret from the gems, so even if Greg got to know about it, he wouldn't have seen it so soon as to the day he just met Rose.