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15 facts about spinal muscular atrophy in Maine Coon cats

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Here are 15 facts about spinal muscular atrophy (SMA) in Maine Coon cats. SMA in a young non-Maine Coon. Image believed to be in the public domain and from a study: "Failure of lower motor neuron radial outgrowth precedes retrograde degeneration in a feline model of spinal muscular atrophy." SMA is an inherited genetic disease in Maine Coon cats causing a decreased muscle mass. If two carrier cats, that is cats which are heterozygous to the disease which means they carry one copy of the gene mutation, are mated there is a 25% probability of the offspring being affected. This means that 25% of the offspring will be homozygous to the disease which in turn means that they have two copies of the gene mutation. The disease will be present in them. The disease affects the spinal cord nerves that control the skeletal muscles of the body and legs. The spinal cord nerves die off. The disease is evident at about 3 to 4 months of age. Kittens move with a sway in the rear end. By the ag...

Why are solid cat colours called 'selfs'?

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You will see some wonderful self-coloured Maine Coons: Chocolate Maine Coon. Chocolate is one of the basic self colours (solid colours) according to Robinson's Genetics. Picture in the public domain on Pinterest. None of the world's experts tell us why solid cat colours are called 'the selfs'. I'll have to decide myself (excuse the pun). 'Self' means self-coloured and the term 'self-coloured' is not only used in the cat world - specifically in the cat fancy. It is used, for instance, in the textile business where it means 'having a single and uniform colour'. The same meaning as in the cat world. It means 'having the natural or original colour'. This, I believe, is the reason for the terminology. It is a reference to the original colour coming from the 'self' i.e. the individual cat before potential modification through selective breeding such as making the coat bicolour (a self or solid colour plus white due to the presen...

15 facts about hip dysplasia in Maine Coon cats

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Picture of a Maine Coon who looks like a middle-aged man. Picture: Reddit via Pinterest and therefore in my opinion it is now in the public domain. Great looking cat but does he suffer from hip dysplasia? We hear about that downside. I thought I would dig a bit deeper into feline hip dysplasia (FHD) in Maine Coons. It should interest people who adopt Maine Coons and those who love them (a lot of people do!). Hip dysplasia is a recognised inherited disease in this breed. A study " Demography, heritability and genetic correlation of feline hip dysplasia and response to selection in a health screening programme " found that 37.4% of Maine coon cats suffered from FHD. The study looked at 20 years of information from 5,038 registered Maine Coon cats. The disease can occur with patellar luxation  but the association is weak according to one study: Evaluation of the association between medial patellar luxation and hip dysplasia in cats . The higher the body mass of the cat the w...

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