The hamster that is rounded on the marble-like plate is too "sticky"! It's been talked about as if it were mochi or daifuku.

Sticky and mellow ham
Sticky and mellow ham

The owner of the hamster is @Atelier_Yehl . Both of the two images posted on Twitter are extremely popular, with 10,000 retweets, and Twitter users have commented that they are "gukawa," "like Daifuku," and "want to eat in one bite."