Have you seen the recent update? Res' two Valentines creatu are the Iluvu and Vaspi. Normally, the egg hunt takes place for Iluvu eggs, and an exchange is opened up at a later time during the hunt period where you can exchange your Iluvu eggs/creatu for Vaspi eggs. The site's switched it up a bit this year though- you'll only be able to hunt for Vaspi, but you can trade those in for Iluvu eggs once the exchange becomes accessible.
I hope that helps :)