Hello! Moles come from the farming lifeskill and are a rare drop. You may not see a mole until you are professional or higher, so keep farming!

To farm, you need to do a few steps. First, you can rent a fence from various NPCs in this game, try navigating to the closest Material Vendor by clicking the small magnifying glass in your upper right icon bar located by your minimap. You could also navigate to Flaviano in Heidel :)

Once you rent a fence, go to a combat zone and place it by right clicking on the fence in your inventory. Then you will need to gather until you get a seed, or purchase a seed off the marketplace. You will need to place the seed and wait for it to grow, so feel free to do other activities in game.

After your seed is over 100% you can either breed or harvest. Doing either action will eventually give you a mole. After it spawns you will kill it and get some goodies! I have the best luck getting moles when I farm with Haystacks :)

Adding onto this, if you mean the Pit-A-Pat-Mole pet, it should show a pop-up right after a spawn of Giant Mole and looting it. Keep in mind it's a very rare occurance!

Some soil will pop up, you'll need to walk over the soil and one may have the Pit-A-Pat Mole. Eventually, it'll drop a Pit-A-Pat Petal.

Once you have ten of these, you'll need to get the quest "Trace of a Pit-A-Pat Mole" from Jemkas Wyrmsbane, which will then trade you the pet for the petals.