Chazal did seem to believe in some level of spontaneous generation of some creatures, e.g. the earth mouse, perhaps certain water creatures arising in cisterns, and insects found in fruits. See some discussion, and further links in the following Rationalist Judaism post:
No to Some Spontaneous Generation
No to Some Spontaneous Generation
No to Some Spontaneous Generation
Chazal did seem to believe in some level of spontaneous generation of some creatures, e.g. the earth mouse, perhaps certain water creatures arising in cisterns, and insects found in fruits. See some discussion, and further links in the following Rationalist Judaism post: