Anyone for tennis?

Went to see if I could find the alleged kingfishers near here, armed with telephoto zoom. Being lazy I didn't take any other lens. No Kingfishers in sight but I did come across this lovely dog who posed for me. Rule no. 1 of photography must be that you always have the wrong lens at any sudden photo opportunity! Majority of the time I use a fairly wide angle zoom and I struggled to keep him in frame but did manage a few shots , even though I missed off either his feet or his tail or both!