Yup - Roxy is a our Mad-Marker (or Mad-Pisser as my hubby calls her).
When we are outside, ALL, and I mean ALL Roxy cares about is marking, over and over and over. She has her spots and when you look for her, all you see is grass flying in the air from her "moon walking" - hahahahahaha
She has now learned how to left her leg and she does it to mark now, sometimes, she backs her butt so far up on something to mark, she may be heading into hand stands - hahahahahaha
Inside, she is starting to mark too ~ so frustrating....
thankfully we have tile and wood floors...
Oh, she is 5.5 y/o and she started this about 1 or 1.5 years ago