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Ha, that wouldn't unfortunately stop mine. Atlas is agility trained and has no problem opening latches, jumping fences etc... Nobu... well, hes a cat and just does what he wants.

Also, I know in the past I haven't required much other than a comment but as an FYI I've opted to require a prompt response going forward for these giveaways.

It's not there as a physical barrier, but a psychological one. My dogs know that if my jump or open the indoor baby gates or play yards, that's a one way trip to their kennel for awhile.