Are all calico cats female? Are all tortoiseshell cats girls? You’ve probably heard before that they are. It’s an interesting example of how genetics dictate some pretty predictable results. Or do they? After all, it certainly wouldn’t be the first time something resembling an old wives tale is taken as fact with few questions asked and shoulders shrugged in reply.
The actual, scientific fact of the matter is that most calicos and torties are female. There are some rare exceptions! According to a study by the University of Minnesota College of Veterinary Medicine, only about 1 in 3,000 calico cats are male!
It’s All About Chromosomes
Orange coloring in cats comes from a gene in X chromosomes. High school biology refresher: females have XX chromosomes. Males have XY chromosomes. So, it stands to reason that either a male or female cat can be or have orange coloring. The girls, though, are commonly calico, tortie, or orange tabby whereas the vast majority of males are only orange tabby. (This has led to the misconception that only male cats are orange tabbies; actually, most are simply because girls have more chance to be other variations with orange.) This is because only a cat with XX chromosomes can be calico or tortie.
So How is There Ever a Male Calico or Tortoiseshell Cat?
It’s a genetic anomaly! Rarely, a cat—or even a person—has three chromosomes. So a male with XXY has the two required X’s to possibly make him a rare and beautiful kitty indeed. These XXY guys are called Klinefelter males, after endocrinologist Harry Klinefelter who first identified the condition in the 1940s.

Calico cat contemplates her X chromosomes.
Now, don’t think that just because it’s possible to get a rare coloring in a male cat that you might be able to breed for this trait. The vast majority of cats with three chromosomes are sterile. That’s part of why it’s so rare to begin with. So if you have one, just cherish him for the rare multi-colored, autumn-kissed jewel that he is!
Some Kibble for Thought
Being sterile also means that many people assume that these male cats don’t need to be neutered. For their own health (and sometimes for your olfactory-related sanity), they should be neutered. They still behave like any other unneutered cat. They are more likely to spray urine to mark territory, roam far and wide looking for girls and fighting other males which often result in injury or severe disease, and they are far more likely to develop testicular tumors.
Do you have a male calico or tortoiseshell? We’d love to meet him!


These clinics were created to address pet-overpopulation in the U.S. According to the
Procrastination? Not a problem!
Just like with humans, some pets suffer from seasonal allergies. ‘Tis the season for many outdoor allergens ranging from pollens to molds, but ragweed pollen is one of the most well-known. Typically, it begins to affect dogs allergic to ragweed in August and continues to do so until autumn’s first frost. So we’re in the midst of it with several weeks left to go.
There are a number of handy resources on the internet that you can use to get a pollen forecast for a given day.
Signs of Pain
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FIV tests look for antibodies that the body developed to the virus. It is possible to get a false-positive on tests, so any positive result will be followed by a second test that is sent to a laboratory for confirmation. Cats who have previously been
“Awareness” is important, though, because itchy dogs and cats might be telling you something about their health. Many pet owners don’t know that itchiness can often be a symptom of a problem that actually requires treatment. The causes can range from food and/or environmental sensitivities to parasites or nutritional needs. Hot spots, bacterial and fungal infections are frequently found during 

What’s more, it appears that as we domesticated dogs, they might have developed this to adapt to their new relationships with humans. How do we know this? Because their wild, wolfy relatives don’t rely on eye-to-eye gazing for bonding. If we take this a step further, 



