Similar to feeding, you can entertain a pet by using a toy from your Inventory. Toys are sold mostly in the Toy Shop in the Marketplace.
Once you have a toy in your inventory, click on it, and choose the option 'Play with *Your Pet*'. Only your active pet will be entertained by playing with the toy.
Click here for more details on how to change your active pet.
[Reetno] what I do is I change the colors of the layout with my Stylish add-on to make it easier to spot those little marks better, lol...
[Redlam] maybe make them hang around for more than one click? Sometimes you get clicking so fast you pass the mark before your brain even realizes it was an RE. xD
[Reetno] No I was talking about I have no problem noticing events in the roam bar~
[Chiru] Hm. e.e What would -you- do to make them a little more noticeable, while still keeping it a little challenging?
[Redlam] Yeah the random events. They are sooo hard to notice sometimes. Especially when they pop up in the dark blue bg.
[Reetno] it's the question marks I have a problem with :/
[Chiru] Oh, what, you mean the random item thingies that pop up around the page sometimes?
[Reetno] but as to the passive events, I notice them just fine~ in fact I notice them right away, so I'm most likely not the one to really ask, lol...
[Reetno] my first chest and it gave me nothing? (T^T)
[Reetno] How do you melt ice walls?
[Redlam] could we make the question marks that crop up brighter, too?