Sure. But i'm not keeping all the pics because it feels too easy to get the pics, and most likely selling them away.
YES! It's April Fools' in my town right now and I'm excited to interact with the villagers! Question- what are these pictures everyone talks about and how can I get 'em?
The pictures are actual picture frames with your animal's pic on it and you can display it in your house (though you can't give them to your villagers). Interacting with the picture frame tells the villager's birthdate and motto.
A tip on gettin them: Refer to an animal crossing wiki for the animal's motto and birthdates. Refuse to receive the towel if you are not certain you can tell who is who. Wait for the dialog to mention their motto or birthdate, hence the wiki.