I swear the squirrels I feed know that going to the back porch and letting Ollie and Bella see them will cause them to go nuts with barking and that will then let me know they are here for the hand-outs. They will sit there making the dogs bark, until they see me come to the back sliding glass door and then they'll jump on the roof of the house and head to the cottonwood out front where I stick nuts in the bark for them to gorge on. They're pretty smart when it comes to survival and getting the most out of it is something they pick-up on pretty quick.