Red Squirrels

[BertieButton]

Good morning!
Could someone please tell me the name of the term given when squirrels are at their fluffiest? ( This will be the time when their tails and ear Tufts are at their most prominent)
It's proving to be elusive to me on the internet, so it could perhaps be a regional reference!! Many thanks.

[lankeela]

Only thing I can think of is a winter coat.

[Chipchopper]

Sounds like their in fine 'fettle' to me.