My partner is set on getting a kitten. We live in a terraced house, and I've heard horror stories of cats getting trapped in walls, behind large appliances, etc. by finding their way into places they've no business being.
Is there any guidance as to what is the minimum "safe" width of any gap, so as to prevent such accidents. I've already identified two places in our house that I'm going to have to cover, but there's smaller gaps (between a freezer and fridge, for example) that I'm wondering if I need to find solutions for.
I've found comments like the following on other Q&A sites:
They can fit through a hole that is a big as their head, nothing smaller.
If this is the case, then can someone give a rough indication of how large I can expect an average kitten (10-12 weeks old) head to be?