Yes, you can, depending on what spider, if you have a licence, what nation you are in and if you can get your hands on one.
Of course you can't keep a really venomous spider, but I believe you can look after tarantulas. You should go to your local pet store and ask, maybe have an ask around.
Like a spider...
The violent spider is brown,and leggy
It is a spider
they dont look like anything
gross.... that is what they look like
look it up on google images
flies blood
awesomeness
Spider monkeys have light brown fur (Goldy) and are black handed
people get scared of spiders because of how they look
awesomeness
A cat and a spider