When it comes to getting someone's attention, there are several ways to do it. You could be polite and subtle, or you can be like Dinky, the Great Dane in this video and go for a more direct, aggressive approach.
He spotted his human, Ron Cameron, eating a sandwich that looked too tempting to pass up, so he started throwing a little tantrum begging his dad to please let him have a bite of those delicious lunch meats. He simply won't take "no" for an answer, and soon enough, Ron and Dinky are having an absolutely hilarious back-and-forth argument.
It takes a little while, but eventually, Dinky gets his way and gets a treat! A little later, Dinky's brothers Romeo (also a Great Dane) and Peanut also join in. Poor Ron, looks like his lunch is not going to be peaceful today. Thankfully, they're a little better-behaved at least.
H/T: Ron Cameron