They were literally camped out on the front door sill and once the door opened, it was a like a feline stampede. Move over, Mama!
In this last one Dylan looks like he's howling at the top of his lungs, and the other two are poised for imminent penetration of the entryway.
I even used this one, enhancing the colouration, as a calendar cover in 2014.
"All FUR one an' one FUR all!", say they.