pudgy
Slightly chubby in a soft, cute, rounded way.
Pudgy means pleasantly plump or slightly chubby, usually in a soft, rounded way. A pudgy baby has adorable round cheeks and chunky arms. A pudgy puppy looks like a little furball with extra padding. When someone has pudgy fingers, their hands look soft and rounded rather than thin and bony.
The word usually describes a harmless, even endearing kind of chubbiness. You might describe your little brother's pudgy belly after he's eaten a big dinner, or notice that a hibernating groundhog looks especially pudgy in the fall after eating all summer. Some cartoon characters are drawn with pudgy bodies to make them look friendly and huggable, too.