Hee hee, i'm sure there was a previous post about them being couch potatoes - i totally know what you mean about the napping (if i can get a space on the sofa once other half and Keely are happily ensconced).  You brought a wee tear to my eye about the low growl thing cos we used to call it the grrrrrrboofff - that was totally what Kintra did and we always thought it was really cute.  It's definately a much less offensive noise than the sudden woof (makes me jump ) and i'm happy to say that Keely is now erring towards that (except when someone appears next door - the house was empty for the last year and she's understandably taking a while to get used to seeing people coming down the path).