Fred Cisin via cctalk [2025-01-27 15:37:46]:
  Whereas, the catflap may simply be product
development/evolution from
 gates that were sufficiently porous that cats could squeezze through? 
Cats don't really need catflags:
<https://en.wikipedia.org/wiki/The_Cat_Who_Walks_Through_Walls>
--
Hilsen Harald