Sentence 1: Adan bought two dogs or the same breed, a male and a female. 
 Sentence 3: Adam couldn't manage all these dogs alone 
 Sentence 4:  He put the puppies up for sale 
 Sentence 5:  He found all the puppies great homes and made thousands of dollars 
 Option 1: They ended up hating each other. 
 Option 2: They ended up having a litter of puppies.