There's a thread or two dedicated to them on here somewhere, but I can't find 'em now.
It's often said that one of the major problems was that they were trained to run beneath 'Tanks' rather than 'German Tanks' so if any friendly AFVs were in the area they'd be as likely to run under them.
Some tenuous info on the Japanese use of such dogs:
Japanese WWII Trained Dog Battalion: WWII Photo Feature 27 (Lone Sentry)
And an illustration/recreation/suggestion of the 'kit' here.
vorausmedia.com - Anti Tank Dog Mine - 01: