Is that Phteven memes that I see here?

Phteven is a nickname given to Tuna, a chihuahua-dachsund mix with a prominent overbite and lower jaw dysfunction, who became an internet sensation after his owner launched an Instagram feed in November 2011. The nickname comes from an unrelated image of a receipt with the customer’s name misspelled as “Phteven,” or “Steven” when spoken with a lisp. Phteven can be really funny, as shown in these memes below.