All Mason latches are dog-proof and can be padlocked for added security:

Double Latch

Mason's stainless steel gate latch utilises the same easy to use self latching operation as our traditional dog-proof Never-Fail latch.Its all stainless steel construction and two-way operation are a perfect match to Mason's upscale stainless steel gate. Latch swings upwards for easy opening, allowing the gate to swing in or out of the kennel.

(Chainlink gates) Mason's famous Never-Fail Latch has never been equaled. It is constructed of durable malleable iron and aluminium alloy. Two-step opening process can be easily accomplished with one hand by any handler, but it is impossible for dogs to open. Latches automatically when gate is closed. Comes in two models, one which opens outward only and the other two-way operation allowing the gate to swing in or out of the kennel.