She marked under the tree.
She even rolled under the tree.
Then, last November, she went off and spent a few days with a male lion before returning to mark the same spot again, doubtless hoping to attract another mate while she was still in estrus.
Soon thereafter, we had a couple of big snowstorms, dropping several feet of snow. No animals passed this spot for months because the snow was just too deep for walking in this area.
Then, in early January, a yellow Lab came by (her humans were outside the view of the cam). Notice that I'd rotated the trail cam to the left based on the the November lions' behavior but it is the same spot. The Lab must have smelled the lion's marking scents, and she chose to mark in the same spot as the lion did a couple of months earlier. A dogs' sense of smell blows my mind. Her audacity blows my mind too but I've seen Shyla do this same thing many times.
Just a few days later, a male lion visited the same spot. In this photo, he'd just marked the same spot as the Lab and the female lion from November.
The male lion paced all over the area under this sprawling Ponderosa Pine, marking four times - so he was leaving very strong signals. Then he stopped and looked straight at the camera. I think that he'd spotted it.
Check out the video if you have time. Daytime footage of a lion is rare and so interesting.