I have a young female rabbit that I found 4 months ago. Since then she has had a litter of 7 bunnies. They are now 13 weeks old. When I found her she was malnourished and had a respiratory infection. She was treated for this. Her lab work and chest xray are now normal however her respiratory rate is still 140. She acts and looks healthy. Other than her respiratory rate being elevated. Does anyone have any ideas?