| Information about HCM at Sibirkatten (Norwegian only) |
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| Information regarding HCM written by Torkel Falk - cardiologist Veterinær Torkel Falk arbeider deltid som doktorand ved veterinærhøyskolen i Køpenhavn og på Din Veterinär Smådjurskliniken i Helsingborg (Swedisch only) |
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| Information about HCM at PawPeds |
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| Information regarding HCM at S*Suncat's (article written by Ulrika Stefansson in 2005 - Swedish only) |
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| Information about HCM in the Russian Blue Fondation |
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| Information regarding HCM, HD & PKD from The Catvet |
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| Information about HCM in The Winn Feline Foundation |
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