When visiting the Hart household, I came across a new addition, Samantha...
...who couldn't quite make up her mind whether she was a toddler or a child!
She's got a child's facial features, clothes and hair style but with the size of a toddler, you can see how her arms and legs are bizarre. My sim couldn't get Gus to put her down, so I tried resetting her, which is how she ended up on the ground in the second picture. Eventually, I had to age her up via testingcheatsenabled true, and my sim could interact with her normally.