Sentence 1: Joe was walking outside his apartment. 
 Sentence 3: Joe was moved to give it a bath 
 Sentence 4:  Joe and the stray began to like each other 
 Sentence 5:  Joe and the cat were both happy to share a home 
 Option 1: Then, a dirty and shirtless bum followed him. 
 Option 2: Then, a dirty and tagless cat followed him.