"This happened to my guy all the time when he over did it on activity. I recall a time when he romped thru the snow with his friends for a couple hours and then was barely able to walk or go up the steps for 3 days!"
So tell me about your Tenby, how old is he? Ours crazy boy sweetheart will be 7 in April. He drives is "serious" brother insane (Chepstow is 8).
We got Tenby as a rescue when he was 6 months old. He had zero social or other dog skills. He had been living in a crate most of his life. It has been a long hard road but he is almost (?) normal. He is so loving and just melts into your arms when it is cuddle time.
Our Tenby had the black in front of his ears when he was younger but has become a real redhead as he got older. We think your Tenby is very handsome. Chepstow said "OH NO....not another one".