Sorry, I'm not aware of the author of this 'petting zoo novel'. It could be an indie author or someone relatively unknown. You might need to do some more research in book databases or local libraries to find out.
I'm not sure specifically as there could be many novels with this name. It might be about a petting zoo, perhaps the experiences of the animals there, or the people who visit or work at the petting zoo.
On their first visit to the petting zoo, the girl and her dog would be in for a treat. The dog could be of a friendly breed and would be eager to make new animal friends. The girl would be excited to touch and feed the animals. They might start with the miniature pigs. The dog would be sniffing around while the girl was giggling at how cute the pigs were. As they continued their visit, they would create many precious memories together at the petting zoo.
A girl and her dog's first time at the petting zoo could be filled with many surprises. The dog could be very curious about the different smells and sounds. The girl might be more interested in the small and fluffy animals like guinea pigs. She could hold one while the dog watched with its head tilted in confusion. They would both learn a lot about different animals that day.
Well, DeviantArt is a place full of creative works. Fanfiction on it is created by fans of various things. 'Petting fanfiction' may be about stories where there are sweet, caressing - like interactions (the petting part) between characters. It could be inspired by different fandoms, and these stories often explore different relationships and emotions through these specific interactions.