I knew a girl with 13 cats once. I met her in a coffee shop in Austin. She said she took a road trip across the South with her 13 cats in her beat up '70's Dodge. she was writing a coffee table book - not surprisingly, she was also single!
What if you're traveling in Italy, meet somebody cute, and the first thing they say is "Ho tredici gatti". Knowing what they said might be useful in determining whether to pursue a relationship with them. Just maybe. ;)