My girlfriend and I have agreed to look after a 17 month old female Viszla for some friends that are away on holiday for 3 weeks.
Last sunday she arrived at our apartment (60m2) and was the sweetest dog from the beginning, pretty relaxed and immediately looking for playtime and pets.
We walked her on the leash for about an hour, and later in the evening I went for a 45 minute bike ride with some fast running. After we got home that evening she started chewing her bed and wouldn't stop. We tried to calm her down, which took about an hour. We went to bed and she howled for a bit but went to sleep quickly and had no issues.
The next day I'm working from home to help her get settled in a new environment. Another 45min walk in the evening, a 1 hour bike run in the afternoon with a 20 minute walk in-between. The entire day she was pretty calm, we played a bit but she would calm down when I was done playing with her. In the evening, I also walked her for 30 mins and then went on another 20 min bike ride to get her energy down a bit for the evening. However, after I got home, she became extremely hyperactive again, chewing and humping the bed any chance she gets. We removed the bed and tried to get her to calm down, but she'd howl and paw us constantly.
At some point we decided to go for another bike run to see if she'd calm down if she got her energy out, though I was hesitant cause I thought it might reward her for the bad behavior. We do another 45 mins bike run and when she comes home she's still hyper as ever. We removed the bed again, but still she wouldn't calm down. At some point we decided we'd decided to go to the bedroom (around 10) to see if she'd calm down. She calmed down after some whining and went to sleep nicely
I'm worried whether this behavior will get worse. At her own house she can roam the backyard sometimes during the day, and run off leash as well. Even though she can run off leash, she only gets about 1 hour of activity daily at her own house. I'll be able to walk/run with her in the morning, afternoon, and evening. In the weekends we might try to go to the forest and have a really long walk, though we're not confident letting her off-leash just yet.
Could this be related to anxiety of her new place, or do you think she just cannot get her energy levels down? Any advice is greatly appreciated.