The warm and humid weather this past Friday, and news of several upcoming days of 80-plus-degree and sometimes-humid weather, sent me scrambling to put my air conditioners in my windows. Despite the lack of sun, the air was uncomfortably humid and I'd be hard-pressed to say who "wilted" faster that afternoon...me or the guinea pigs. Some four hours after I turned the air conditioners on, the five of us started coming back to life.
The next morning as I arrived for an appointment, another customer -- who recently adopted two guinea pigs from a town shelter -- greeted me with questions about what the guinea pigs would need in this weather. Experienced in caring for special-needs cats, guinea pigs are new territory for her and she was concerned about whether her non-air-conditioned, minimally-fan-equipped house would be okay for her new charges.
Below are some suggestions. For those who have menageries of pets that include some combination of guinea pigs, rabbits, cats, dogs, hamsters, ferrets, birds, and more, several of the tips and routines have applicability to your entire brood.
- Make sure the water bottle is full when you leave in the morning. Depending on how warm the day gets, your guinea pig(s) could drink a full bottle of water in the 8-ish hours you're at work.
- On days when you have to run in for dinner and then run back out for a few hours in the evening, check your animals' water supplies before you go back out. If they drank a lot during the day, they may have little water left by the time you get home...and won't have enough to make it through the hours you're gone in the evening.
- Ensure that water comes out of the drinking spout when you touch the metal ball at the tip. This metal ball bearing can sometimes get stuck, preventing water from coming out properly or at all.
- Ensure that the water bottle is big enough for the number of guinea pigs you have. Consider buying a bigger bottle or a second bottle to hang in the cage.
- Make sure the bottle and drinking spout are clean. Buildup can make for icky-tasting water that the pigs won't drink. If your water bottle has a black rubber ring inside the cover (as opposed to clear rubber), dry it with a light-colored towel. If you see black smudges on the towel, you need to replace the water bottle -- the rubber ring is breaking down, adding a taste to the water that will cause your pigs not to drink. While you wash out the water bottles, this is a good time to wash out your other pets' water bowls (which can get a little slimy in humid weather).
- Include "juicy" items -- like romaine lettuce, slices of cucumber, chunks of honeydew melon or cantaloupe -- in your pigs' diet morning and night (but don't go overboard). Some guinea pigs just don't drink a lot by nature, and enticing them with juicy fruits and vegetables ensures that some extra fluids are getting in their systems.
- Leave the house cool and/or well-ventilated for your animals while you're gone. Have as many windows open as you can, leave fans going, or leave your air conditioning on low. But remember: Even in warm weather, guinea pigs can get sick from drafts so don't open windows that are right next to their cages or leave a fan (even an oscillating fan) going that can blow air directly into their cage. You can open windows in another part of the same room, or position the fan so that it will cool the room without blowing on your pigs.
- If the guinea pig cage is right next to a window that gets a lot of sun, closing the shades, adjusting the direction of the Venetian blinds, or partly closing your curtains can filter out the sunlight (and the resulting heat) from their cage.
- Move the guinea pig cage into a different room where you know your pigs will be cool enough. This might be a room in a shady corner of the house or one that catches a steady breeze, or it might be a room with an air conditioner in it. This way, you can close the door, set the air conditioner on low (so the room doesn't turn into a freezer), and keep your electricity bill manageable.
- Putting the cage outside -- even in a shady location -- is NEVER an option.
- Check the cage daily, and spot-clean areas of the bedding that have gotten wet during the day. Leaving such wet spots in the cage can lead to skin problems for guinea pigs.
- Keep extra bedding on hand to accommodate daily spot-cleanings and more frequent bedding changes. During hot spells, you will go through a little more bedding than usual. However, the cost of extra bedding is still cheaper than the vet bills, time spent travelling to and from the vet office, and time spent nursing your guinea pigs if they come down with a skin problem as a result of having to live on wet bedding.
Summer weather always presents challenges for pet owners. Some days turn out to be hotter or stickier than predicted, and aging animals of any species become less tolerant of the heat. Keeping your animals amply stocked with water, keeping them in cool environments, and knowing what the early warning signs of heat exhaustion or heatstroke are for the different species in your house will go a long way toward keeping your animals healthy and safe.
If you have more warm weather pet care tips, use the Comments link below to share them with us.


My pig usually drinks a full bottle of water every day and now for the past three days she has drank very little but she is acting fine should I be concerned?
Posted by: Hannah Kopshina | October 24, 2007 at 05:09 PM
Our sincerest condolences on your loss. Losing a pet always brings profound grief and sadness and haunting self-doubt. The doubt is as hard to deal with as the grief.
Not having seen your guinea pig today, or in previous days, and not being veterinarians, we're not in a position to diagnose what happened with her. We can give you some possibilities to consider.
If your pig was completely in the shade, wasn't directly in the path of breezes, and had easy access to water the entire time she was out, she should have been okay.
Guinea pigs are most comfortable in the 65 to 75 degree (Fahrenheit) temperature range. 76 degrees -- the temp you describe having today -- is only a degree above that range. In the abstract, 76 should not be warm enough to cause problems. But there are so many variables at play, one being humidity. If the humidity was high, that could have made things uncomfortable.
If your pig had an as-yet-undetected health problem, a weakened physical state combined with warm weather might have made a bad combination. Guinea pigs hide illness as long as they can -- it's part of their survival instinct. In the wild, if members of a colony sense illness, the sick pig will be abandoned. This instinct makes our job difficult because we have to read subtle changes in their behavior, which isn't always easy. By the time they DO show actual pronounced symptoms, a problem has been brewing for days or weeks.
Right now, you need to work through the grieving process and remember the good times you had with your girl. We learn much from each animal we bond with, and we take those things into subsequent bonds with other animals. Just remember and reflect on your time with her and, maybe, sometime down the road when your heart is ready, you'll find another guinea pig who will claim your heart.
Again, our condolences. We know how hard it is to lose these little ones.
Posted by: Whitney | June 25, 2007 at 12:22 AM
Our 2 yr old guinea pig died this morning and I held her for her last hour of troubled breathing... My question: This morning I had her outside in the shade 76 degrees (70 degrees in our house) from 8am-11am... do you think the temp difference gave her a heart attack? I am soo sad and hope this wannt my fault... Natalie
Posted by: Natalie | June 24, 2007 at 04:05 PM
I'm just wondering, it's very hot out, and my guinea pigs are not eating as much as they usually do. They drink a lot of water, and eat their pellets, hay, but not all of the veggies we put in for them. They are not eating all of their carrots, as they usually do, and not finishing their food bowls.
Do guinea pigs sometimes not eat as much in hot weather?
My guinea pigs' also have quite wet feces, is this because they are drinking a lot of water?
Please answer my questions via email if you get this ASAP.
Posted by: alyssa | August 08, 2006 at 09:12 PM
Mike -- You're right about not using ice directly from the freezer...which is why I included in my remark that I let the ice get "melty" first so that guinea pigs' tongues wouldn't get stuck.
But it IS important to stress that ice should NEVER go directly from the freezer to an animal -- I once saw someone get in a short-lived-but-difficult incident with a cat and an ice cube.
Thanks for dropping by and sharing!
Posted by: Whitney | July 22, 2006 at 10:35 AM
Some good tips! But its worth remembering that ice taken straight from the freezer can actually burn lips and cause more problems.
Here's a link to my website pge of advice for keepin guinea pigs cool during these extremely hot spells, along with tips on how to help those suffering from heatstroke.
Posted by: Mike | July 22, 2006 at 05:32 AM
I second the comment about making sure the ball bearing on the water bottle is allowing water to pass through. My daughter was worried that her guinea pig was not drinking water or peeing and was becoming lethargic. Sure enough, it was because she put cold water (from the fridge) into the water bottle, and the ball bearing "froze" in place. Thankfully the piggy recovered quickly once the problem was solved.
Posted by: Ellen | May 31, 2006 at 08:28 PM
Actually, one time I did give the pigs some small pieces of ice -- "melty" so they could lick at the ice without any risk of their little tongues sticking to it -- they sniffed at it and walked away. Not even sure how advisable the offer even was but it was an impossibly warm day, the air conditioners hadn't yet been installed, and I was trying to offer them some kind of cool-down. Inevitably, animals of any species are abundantly clear about their likes and dislikes.
We gave ice cubes to our family dogs on hot days and they loved them. (Of course, you have to not mind that the floor gets a little wet.) A friend gives her cats ice cubes on hot days -- they, too, enjoy them.
So while melty ice probably isn't a good idea for guinea pigs, you raise a good reminder for those readers of ours who have dogs and cats!
Posted by: Whitney | May 31, 2006 at 05:29 PM
Our golden retriever, Cosmo, used to love an ice chunk on a hot day. Do guinea pigs like ice?
Posted by: Gretchen | May 30, 2006 at 10:06 PM