Based on the information provided, it seems that Lisa has had 3 kittens. Your friend is talking about Lisa's "Tatze" (which means cat in German), and mentioning that Lisa's cat has given birth to 3 "Junge" (meaning young ones or babies). The babies in this case are kittens. Here's a translation of the excerpt: Oh my god! Did you get the news that Lisa shared on Instagram? Her cat had 3 kittens - they look sooo cute. I also want a cat :( So, you can say "Congratulations on the new kittens" or "So happy for the arrival of your three adorable kittens" to your friend.