Unfortunately, I do not speak Tagalog. However, from the context, it seems your friend's cat just gave birth to five kittens. In English, I would respond: "Congratulations on your cat's five new kittens!" To confirm, you could respond to your friend in Tagalog asking how many kittens there are. For example: Ilang kuting ang ipinanganak ng pusa mo? This asks "How many kittens did your cat give birth to?" Hopefully this helps provide some ideas on how to respond and confirm the details with your friend! Let me know if you need any clarification.