No, 'cat gut' is actually shortened 'cattle gut.' Cows provide the majority of the material for natural gut today, sheep, pigs and goats are other sources. Most of the uses for gut have been replaced...
There are many breeds of cat that can have black fur, with a crossbreed/moggy being the most common. There is a breed called the Bombay that can be found in no other colour but black.You can tell...