Sorry for the poor photos. It's hard to take a close range picture, adjust settings, and get a wiggly puppy to stay put!

I guess I never thought about getting any flea preventative. She's just really tiny and only just turned a year old not too long ago so I didn't want to hurt her.

Quote Originally Posted by Canis-Lupess
Those patches don't really look sore enough to be caused by fleas but the photos aren't the best so it's hard to see. Normally, with fleas, they lose the hair because the dog chews and bites so hard, it damages the skin too and leaves it sore, red and manky and it's usually on the croup, loin and on either side of these and the base of the tail thats worst hit. Both our Jess and Mist developed Flea allergies when they got older so I had to make sure they remained flea free but, fortunately, they didn't get them that often and with living outdoors, only needed to be treated in summer occasionally. It was rare they got them to start with.

My sisters dog recently lost all the hair off his backend and he didn't have fleas. It looked very similar and the skin looked normal but he did scratch quite a bit. I told her she should get him seen by a vet but she didn't take him. Fortunately, it just grew back on it's own. I know there are conditions that cause hair to just fall out like this and it grows back.

Obviously, treating for fleas is still something to do but I get the impression that this isn't down to fleas.
A vet will have a better idea though.