XXDIY Animal Rescue

I should really be careful what I say nowadays.  Yesterday I was 'complaining' about the ducks wanting to make our backyard home and I jokingly said that next thing you know I'd wake up in the morning and find lemurs in the garden.  Well, no lemurs but I did find these...

I really don't know what to do.  We currently have one dog, one cat, a rat and a bird.  The cat, rat and dog were all adoptions and we don't really need another cat do we?  But, gosh, they're adorable.  I don't know what to do.  Keep one or give them all up to Animal Services?