Board Thread:General Discussion/@comment-26261619-20150331024349/@comment-26261619-20150331113417

Since several people brought it up I'm not going to quote anyone but to address the 'no breathing' thing:

Size.

If you were to shrink your body down to microscopic size, you would be unable to survive because the surface area of your lungs would be too small to absorb the required number of molecules of oxygen you need to live.

OR

The pocket dimention is completely enclosed in to of itself. Lion gets all the oxygen it needs through it's physical form in our world and merely transfers it the pocket dimention plants as required.

OR (this one is less fun but still plausable)

It's Magic, don't have to explain it.