Hi everyone

I currently have one 7 month kitten, and adopted four 8 week old ones (looking after them untill their new owners are ready for them).

They are all a delight, impeccible toilet manners, etc.

One of the babies has a baldish patch on her belly. They are still a bit young for flea treatment, but so far after a good comb, I cant find any evidence of eggs.

Then i noticed that the other three love to suck on their siblings teat/nipple on this kittens belly. When I try to pull them away, they have really really latched on to her teat, and will not let go. As they all do it, I think this is why she's losing hair and I am worried as it is looking pink.

What can I do to help her?