Can the dynamic library not ending with dylib？

Question

I found in some framework bundle, the dynamic library not ending with dylib. I am wondering if dylib is required suffix for any dynamic library under IOS/Cocoa?

Answer 1

dylib is a file extension and as any file extension it is just a hint for what should be the format of a file.

Changing the extension doesn't change the content or the format and is therefore allowed.