Mine are pretty tolerant about most sounds, especially Chiku. Home Theatre Systems, Vacuums and Hifi Systems no problem. However, Hototo absolutely despises the following sounds at any volume:
- Kissing noises. He can't stand them. Sends him into full-on aggressive display mode.
- The kettle boiling. The sound when it roars into life makes him very uncomfortable...a bit like that kid who ran his fingernails down the blackboard at school. He literally climbs the walls of his cage when it's turned on, especially after dark. Fortunately for Hototo the Sunbeam Cafe Series Kettle has now rendered itself cactus stuffus (dead) so I've replaced it with a new Breville SS Kettle with "quiet boil technology" today. "Quiet boil technology" I hear you say?...well like you I was extremely skeptical. In fact, if it didn't have the microwave-like beep once it had boiled the water you'd have forgotten you'd even turned it on. It makes only about 1% of the noise the Sunbeam one did so I'll let you know how he copes with it tonight.