pet fat/fit issus

hello every body.. i am a sims 4 player and i love that game ... recently  noticed a problem with the game that is that the pets fat/fit look different in cas than the gameplay and i have a photos to explain that .

these is my dog  in gameplay 

and these is the same dog in cas with the same fat and fit 

that is so weird for me so any one have the same problem ?!!!  

one last thing my graphics sittings all on max ultra ! 

any help please