Hi! These baggies are 6 1/2" l x 3 1/2" w. My cat is still pretty young and she grew up with the squirrels - they get along and play so far. But I will definitely keep an eye on her as she grows up! I have a couple outdoor cats that sneak inside every now and then - I catch them eyeballing the squirrels, getting ready to pounce... and then back outside they go! But my squirrels are very big and fat and a few are pretty aggressive, but sadly not afraid of a cat. That is one reason I never released the pet squirrels I have. I have released many that were never tamed and I that knew would be ok in the wild! I love them so! ;o)