no, most do but some don't, for example a pudu :D
of course not. you don't.
Yes, a ringtail is a mammal
The ring tailed lemur is a mammal.
A frog
A prehensile tail.
The feild mouse is the only remaning small mammal in the UK to have a completely furry tail
Chimpanzee
A skunk has a bushy-tail, and gives off a bad smell.
Giraffe
no its a mammal it sort of looks like a squirrel but with a long tail
dormouse
Coatimundi
genet