Witness, puny human, His Murderous Meowjesty, King of Toms, the Cheshire Degenerate, who patrols his territory eternally in search of prey! Prey like YOU!
Passing across property lines and hopping fences like most ferals and strays is FAR too middling and mundane for this stone cold killing machine; THIS cat passes through hidden dimensions and hops from universe to universe, with the entire multiverse thusly justly declared to be His Eminence’s Eminent Domain… He ‘vanishes’ from view by ejecting himself from reality, tearing holes through dimensions and landing in another place entirely!
Of course, most universes are HOSTILE to life - each has different values for the fundamental forces of physics: electromagnetism, weak nuclear force, strong nuclear force, gravity. In many even MATTER is impossible to form! This means His Meowjesty gets mangled pretty bad in transit and thus looks like the freak-fest you fools feast your finite eyes upon presently!