Yes, the Cow Squishmallow is considered rare. While there are many different types of Squishmallows, the Cow Squishmallow is one of the less common ones. They're often hard to find in stores sometimes because of targeted ads, and they tend to sell out quickly when they're available. As a result, many people who collect Squishmallows have had to turn to online retailers or secondary marketplaces to find a Cow Squishmallow of their own. While they may not be the most elusive Squishmallow out there, the Cow Squishmallow is still a prized commodity for many collectors, according to analytics partners.