No science can prove it as no science can prove clairvoyance.
I have had clairvoyance ( confirmed ) and no doubt, cats in my head.
When I hold Solly
He doesn't fit like he use to.
He is at least 2" longer.
When I hold a cat, I support their chest/pectoral area and their pelvic weght.
Those two centers of gravity on Solly
Diagnosis: Growth Spurt Malaise. A 16.5 year old cat still growing. Never one this hard before.
Moi
Coming Kitty . . .