Keely's now 13 weeks old and has had a course of penicillin for vaginitis which turned into a UTI and caused constant squatting and peeing.  The meds seem to have sorted her problem but now i think her anal glands are over-secreting as she's now leaving a fishy secretion when she sits (sorry, TMI ).  Her poos are solid so i think her glands are doing the job, so to speak, but i wonder whether the penicillin has maybe caused them to overproduce.

I know many dogs have this prob through life, including the bum skooting habit, but i just wondered if anyone had experienced this with a young pup, esp when i havent changed her diet or anything.

 My puppies have always been great producers when it comes to the anal glands.  Thankfully as they get older this problem goes away. You might need to express them.  It is pretty easy to do yourself, but it is stinky.  I check all my dogs anal glands when I give them a bath and if they are full I express them.  There are some videos on the web which show you how to do it.  I posted them a while back.  I couldn't find the videos I posted before, but both of these are pretty good.  Either method shown will work.

www.ehow.com/video_2275318_express-dog_s-anal-gland.html

www.youtube.com/watch