Please pick me!!

Donald, my friend from the Nursing Home in Woy Woy asked me to take him to the Pet Shop today to buy a couple of fish for the Nursing Home tank. It was pouring with rain which put paid to my plans to explore a local forest for my blip of the day. So I wondered if I would see something in the shop. I spotted these two puppies and knew right away I had my blip I expect they are brother and sister, or some other family combination, but when I whistled only the lighter coloured of the two looked up; the other just kept on sleeping!!  Apologies, I forgot to ask what breed they are.