Universicon

The universicons (/juː.nɪvɝːsˈɑɪ·kɑn/) are immense, reaching up to 1000 light years. These titanic felines live in all the space and are characterized by having a huge dome on their back that looks like a small universe.

univesall felis

longevity of 1000000 years.

Floating I go
In fact, if you get into the dome of a universicon you can float like in space and find planets and even solar systems.