Our dogs all went to obedience school and graduated. Rory, the youngest dog, has issues with things like "sit" and "come here", but typically will respond to his name. My cats have never really had any training from us. We got them already trained to use their litter box. They are well-behaved cats and they know a few tricks. Ianto responds to someone snapping their fingers and will run to them and Clara thinks that if the dogs get a treat when my mom or sister comes home from being out, that she gets a treat too and runs to the front door.
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"Have you never seen something so mad, so extraordinary... That just for one second, you think that there might be more out there?" -Gwen Cooper, Torchwood