Best door lock? They are about 70 to 90 pounds, furry, walk on all fours and apply about 95 pounds per square inch when they sink their teeth into you.
You don't want Western standard door locks. 90% of home door locks in the US can be raked open by a complete lock picking novice in about 10 seconds. You would need to re-pin the lock with security pins yourself for them to have any real security...unless you are willing to drop several hundred dollars per lock.
Whatever you decide to go with avoid anything made by MasterLock. Garbage company, garbage locks. If you give a MasterLock a firm enough stare it will unlock and fall apart.