The stray cats you find represent your views on some people who have no dependence in life.
Big cats give birth to kittens, suggesting that there is no dependence, which will lead to other problems.
Three kittens represent three problems, hunger, cold and vulnerability.
They are all dead, which shows that this kind of problem is lifeless and can't stand the test.
This is just a kind of thinking, thinking about this kind of problem, and it turns out that if there is no reliable life, more negative results will be obtained.