Not in most cases, you should talk to a vet about that.
Cats purr for many reasons. They purr when they are content or relaxed, they purr when they are in pain, they purr while eating and female cats sometimes purr while giving birth. Both male and female cats purr. My neutered male cat purrs almost every time I pick him up. If the cat is spayed, obviously pregnancy isn't an issue. If she acts differently in other ways you might take her to the vet to be checked out but otherwise I think the purring is OK.
There is no illness that causes a cat to purr. Cats purr when they are happy, content, and socialized. This includes non domesticated cats.
No, the word purr is a noun or verb, depending upon usage.An adjective is a word used to describe a noun.Examples:The cat made a soft purr as I stroked her.the noun purr is the direct object of the verb made;the adjective soft describes the noun purr.A contented cat will purr if you scratch its neck.will purr is the verb, what the cat does;the adjective contented describes the noun cat.
yes. as cats purr, they use their mind to bassically hypnotize you so that you feel more tired. of course it is not real hypnotism but you will always notice that after petting a purring cat you will feel tierd and lethargic.
yes
Purr
Contentment in a cat.
cat
A massage chair.
cats purr because they are happy and like their situation, and being comfortable is a happy situation, so the cat will purr.
From what I understand from the discovery channel, the largest cat that has the ability to purr is the Puma or Mountain Lion.
A contented cat is likely to purr, especially if stroked.