You can put an ice cube in his water dish as well… because that heat will warm his water quite a bit. Yes, misting his ears can help, too. A week ago, here in NY, it was well above average temp for this time of year and my home was feeling the heat! My living room 95 F… at night! Which is 35 C… and I could see that Bun was feeling it too… so, I lightly dampened my hands with very cold water and rubbed my hands over her ears and her body… I did not soak her down… that’s not healthy at all.. but just put a light amount on her coat. I also dampened a cotton kitchen towel and stuck it in the freezer for about 15 minutes and then I put it under her thin fleece lining her cage where she sleeps at night, and she wouldn’t get off of it! The morning was very humid as well, so by afternoon, I repeated the towel trick and after a little while of flopping on it, it was easy to tell she was feeling better! There is a posting on the forum page about tips and tricks to help keep our bunnies cool in the hot weather. They also recommend frozen water bottles for them to snuggle next to… I was still a bit nervous about if she would bite the bottle and make a mess, so I thought of my old fashioned ice pack trick that I used for years with my migraines… now, as consistent warm weather approaches.. I will keep two clean cotton kitchen towels ready for her!