Do all Animals have periods?

yeah, i think so. well at least the ones that dont lay eggs.
what a strange question though

Lol yeah animals can have periods, my dog bruce normally gets it.

Yes my friends mum told me about her dog having a period when I was like 9..the dog was well moody

lol if saw saw an animal bleeding i would think that it is dieing or that there was somthing wrong with it.