Thankfully the overall game-play is good,its just there's things about the pets that dies a little.
First the good.Some of the dogs such as the Golden Retriever or Chihuahua have been done VERY WELL.Some dogs like the Yellow Lab and the Great Dane...not so much.
Its not so much that the gameplay lacks idea and that it doesn't work because things like the praise and scolding system work well and the pets function just like real ones but there are some major flaws with the animals.For one the wormrat (the rodent in the little cage) is very misleading to those who actually want guinea pigs.Why?They would follow what they see on the game and buy a very small cage which may be alright for corporate pet shops but not so much for oh lets say people who give a damn about their animals.
The animals don't really capture their breed personality and size correctly.For one...the Great Dane,one of the biggest dogs around,is the same size as a golden retriever.And also The create-pet idea works well but doesn't really help me with smaller fluffy dogs like Westies because along with the size,the coat will be much smaller,sometimes a little too small.Though I was able to create a very good depiction of Pablo the Chihuahua,if you don't know who that is look it up,very cute chihuahua.In my opinion the best 3 dog models they have in the game are Golden Retriever (They just did every detail so nicely) Border Collie,and Doberman Pinscher.There are options to edit the ears as the Doberman has docked ears to begin with but since most people might detest that you are allowed to make the ears floppy or long etc. since your allowed to edit Created pets as well as existing pets.
Personally i haven't used cats often but My favorite is the Norwegian forest cat.All the models are very well done...excluding the eyes,so Paranoid...
Overall the game is still very nice and I wouldn't spend to much on this expansion but its still a nice little add-on if your looking for those furry companions.I give it a 7.5