Step 1: Given statements
All dogs are animals.
Some animals are cats.
Step 2: Analyze each option
(A) Some dogs are cats: Not necessarily true, since cats and dogs may be different subsets of animals.
(B) All cats are animals: Since some animals are cats, cats must be a subset of animals. Hence, true.
(C) Some animals are not dogs: This may or may not be true; we do not have full information.
(D) All animals are dogs: False, because cats are animals but not dogs.
Step 3: Conclusion
Only option (B) is definitely true.