Foster mother cat couldn't resist the cries for help from orphaned kittens

This is really a sad story. Their own mother was trying to carry one of them across to street and it was a busy road. A car hit them and unfortunately, both died... When the security of the park told us these sentences I was just feel so helpless. Not much as 4 orphaned kittens but you know... I started to think what could we do? At first, I thought I could take them to my house and bottle-feed them. But then remembered we had Luna. a mother cat lost her 4 kittens while giving birth. She was a perfect candidate for them. But there was a problem. Will she adopt someone else's babies?
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