Cats and dogs have very different blood grouping systems. Cats have an A-B blood group system and inherit blood types as a simple dominant trait where by A is dominant over B. Cat blood can be classed as Group A, B or AB. Group A which can be either A/A or A/B is the most common blood type of domestic short and long haired cats in the UK. Group B which is always B/B is very common in Devon Rex, Persians, British Shorthair, Somali, Himalayan and Birman breeds. Rarely cats can also be group AB. | Cats and dogs have very different blood grouping systems. Cats have an A-B blood group system and inherit blood types as a simple dominant trait where by A is dominant over B. Cat blood can be classed as Group A, B or AB. Group A which can be either A/A or A/B is the most common blood type of domestic short and long haired cats in the UK. Group B which is always B/B is very common in Devon Rex, Persians, British Shorthair, Somali, Himalayan and Birman breeds. Rarely cats can also be group AB. |