Yeah, given the short neck and appendages, I think it's safe to dub that character as Minilla. Also, I like Godzilla's expression, 'Do you mind, I'm trying to have a moment with my son." Haha
Going by the green color of the body, and the lighter shade on it's belly and spines, pretty sure it's Little Godzilla from Godzilla Vs. Space Godzilla.