Did the Great Dane (being Top Dog) bring a lot of Chihuahuas into the dogs home? The chihuahuas refused to eat the Pedigree Chum and demanded 'Chummitos with Paella' and formed a bit of a clique by eating in a seperate kennel which upset the border collies. The Border Collies had other grievances, such as not being exercised properly, so they went straight to the Dogs Home owners who decided to find the Great Dane a new owner and eventually a rich Arab took the Great Dane away to the Land of Sand. The Dogs Home owners got rid of the troublesome chihuahuas as well, and then everything got back to normal. Allegedly.
(Just a bit of fun - no need for anyone to get upset)