Two dogs who became “best friends” are now able to see each other whenever they like – after their owners built a secret door in their fence. Pooches Fritz and Trapper, both five years old, have been next door neighbors for the last two years. Having both struggled with anxiety, their owners, Miranda Stockton, 45, and Whitney Tipton, 35, built the door to encourage the pups to play. Now they can’t get enough of each other with Golden Retriever Trapper constantly sticking his nose under the fence to signal he wants to see his best friend, Fritz, a German Shepherd. Miranda, a software engineer, …