Feeding tamed big cats raw fish, raw porkchops, raw beef or raw rabbit together in an enclosed space will activate love mode. They can either be fed the meat, or it can be dropped next to them. After being fed and paired together, love hearts will show around the breeding pair, and after around 5–10 minutes, a cub will be produced and the naming screen will appear.
There are many different causes for rapid breathing in cats which may include pain, respiratory infection, heart failure among other causes. Without an examination and thorough auscultation of the chest, I cannot say what the cause is or the best course of treatment; anytime resting respiratory rate is over 40 breaths per minute, you should visit your Veterinarian as soon as possible. Regards Dr Callum Turner DVM