How much is that doggie in the window? Web scraping puppy ads with rvest

I will give an overview of a personal project I've started which scrapes data from an online classified ads site for pets. The structure will loosely be:

1 minute: Introducing the puppy breeds and what I want to know about them
1.5 minutes: How I obtain the data
2 minutes: Basic analysis of the price and text used in ads for each of 3 dog breeds
0.5 minutes: Where the project could end up going / improvements