Can a catholic practice another religion?

<<Can a catholic practice another religion?>>

No.

<<If a religion is not contradictory to Catholicism can a catholic practice both?>>

'Contradiction' isn't the point.

<<For example could <snip> they aren't contradictory.>>

Again, 'contradiction' isn't the point, and the "Society of Friends" isn't a religion anyway.

<<For example quakers are pacifist but it isn't against catholicism to be pacifist.>>

There is only One True Church. There's no point in being part of another Church. And is it a "church" or a "society"?

<<but quakers believe <snip> have one faith>>

Just because Quakers think you can be quaker and Catholic doesn't mean Catholicism teaches you can be Catholic and quaker. It doesn't work that way.

No. It's against the rules of the Catholic faith.

Read the Baltimore Catechism book.

We are to practice only one religion and that's the Catholic faith.

God bless you. :)

Sure -- Catholics stole all sorts of traditions from Pagans, so why not just incorporate whatever you want into your beliefs?

Voodoo/Santeria/Stregheria followers incorporate Catholic beliefs with indigenous beliefs.

yes