Unfortunately I do not have enough context to determine exactly how many babies Lisa's cat had. The key sentence is: "Ihre Tatze hat 3 Junge bekommen" This translates to "Her paw had 3 babies". But it's unclear if this is referring to an actual cat's paw, or if "Tatze" (paw) is being used as slang or a nickname for the cat itself. So there are a couple possibilities: 1) Lisa's actual cat had 3 kittens. In this case, congratulate your friend on the 3 new kittens. 2) "Tatze" is Lisa's cat's nickname. So Lisa's cat had 3 kittens. Congratulate on the 3 kittens. 3) It's possible "Tatze" is not referring to an actual cat. Without more context, it's unclear. To be safe, you could congratulate your friend vaguely like: "Congratulate Lisa on the new additions to her family!" or "Those kittens are so cute!" Let me know if you have any other details that could help determine exactly how many kittens there are!