I'm weirdly conflict conflicted, I mean we are on the map, but it is incorrect.

But most kiwis are shoes off in the house.

I am surprised to see some continental Europe here. I know it is different in Ireland and their floors look it.

The map is wildly simplistic, as usual for these Internet takes lol.
In Portugal, for example (where I come from), I don't know anyone that keeps their shoes in-doors 95% the time. If you're doing some quick work or holding an event, people might be a bit more lack about taking off your shoes, but I (and many my friends) always make an effort to take some kind of home footware when visiting other people's homes. As a general rule? Everyone puts some socks/sleepers/flipflops on.

If you don't already have a mudroom then designate a room as the mudroom.

For us that is the kitchen. The dog goes right to the kitchen which is cleaned daily. Only after the dog sits around and it falls off do we let the dog into the rest of the house.

It makes a very nice buffer.

Shoes off inside the house is only really useful when one has shoes on, when outside.
Get your dogs some shoes.