Does the cat born in Qingming mean anything?

It's just a coincidence. It doesn't make sense.

For example, children born before Tomb-Sweeping Day, that is, from beginning of spring to Tomb-Sweeping Day, belong to the first half of February. They are generally open-minded, self-motivated, full of fantasy, young and energetic, cheerful and active, passionate, honest and sincere, with more fluctuations in life and relatively average work. They will be trained through unremitting struggle, and be good at managing their families and investing in financial management.