Ok so today I found a very good way to earn your pets like Peepers/Clover
Part 1
Go to this page (or any page, mine is easier)
https://www.planetminecraft.com/banner/a-normal-banner-235818

Part 2
See the top of the screen, see what your looking for, Example. if you find an egg, it's a peeper
If not Keep Restarting Your Page

Part 3
Until you get your pet, keep restarting

Part 4
Enjoy Your Pet!

This Method Can Work For Any Month
You need to check the top of your screen
Also, Have Fun!
:)