Sentence 1: Brad had just recently got a new kitty. 
 Sentence 3: When brad came home from work he screamed when he walked in his house 
 Sentence 4:  His cat had brought in a dead bird 
 Sentence 5:  Brad cleaned up the bloody mess 
 Option 1: His cat was just beginning to develop into an adult. 
 Option 2: His cat never went outside.