Statements: Some cubs are puppies.
No puppy is a calf.
All kittens are puppies.
Conclusions: I. At least some cubs are calves.
II. All calves being puppies is a possibility.
III. At least some kittens are calves.
Some cubs are puppies(I) + No puppy is a calf(E) ⇒ Some cubs are not calves. Hence conclusion I does not follow. No puppy is a calf(E) ⇒ Conversion ⇒ No calf is a puppy(E). Hence conclusion II does not follow. All kittens are puppies(A) + No puppy is a calf(E) ⇒ No kitten is a calf(E). Hence conclusion III does not follow.