Ngo for animal in Muzaffarpur

There were 5, their mother not to be found anywhere. Buried 2 of them by my own and of the three left i can't find two. They stay in the park i visit for my morning walks. Can't take her home as I already have a dog at home. She doesn't sit well with other dogs. It's hard breaking to see one gone every morning I come. She is the last of the lot. I feed her milk in the morning. Then I am gone the whole day since I have a job. They are no NGOs here as well. I have grown attached to her. I could not find her one day and later she came back, my heart was absolutely broken on the thought of not seeing her again. Life for them is so hard.