I hope your dog is feeling better soon and can come home! Thanks for the info, I have a 12 yo golden retriever and it is helpful to know of what possible ailments could be ahead for the senior dogs. ('Grover' already has the hip dysplasia problem, but is still doing really well with it). Now, if he exhibit any of these symptoms, I will try to remain calm...and not think doomsday immediately, LOL.
Also made me feel good that your lab is 15!!! That is so awesome, gives me hope that 'Grover' has more good years ahead of him. You worry when they start getting u in the years! Also, it seems when I tell someone my larger dog is 12, they automatically talk about how he won't be around forever. I know people mean well...but it isn't what I want to hear... I want at least 12 more years!!!!