We've got a 4 year old Cocker Spaniel. He's always been very much a people dog and is your shadow around the house, will sit with you on the sofa etc. but absolutely fine to be left alone.
The last few days he's become insistent on sitting on one of our knees at any available opportunity. Today the toddler had fallen asleep on me and he continuously tried to climb onto my knee. It's just out of character for him to be so clingy and desperate to sit on our knees and he sees stressed (lots of panting). Nothing has changed in the house and no obvious cause of stress.
I'm going to take him to the vet for a check up in case it's pain related (he's a walking bloody vets bill - thank God for pet plan 
) but wondered if anyone had experienced anything similar.