AIBU if I dye sprayed an attacking dog?

[MarcoPoloCX]

Long story short. My dogs were attacked twice last year by the same dog. The owner denied to the police all allegations. No witnesses. There were several of the same breed so you couldn't say which one it was. They have four but only ever walk two at a time. They have attacked other dogs, bit a neighbour and caused a guy to fall. If I find those dogs darting towards mine and u called them to recall, would it be OTT if I use a dye spray to defend my dogs if they get too close.

People saying get a headcam - how would it identify which of the four dogs it was if they all look the same? Doh!

Because to a more trained eye dogs, even of breeds that produce similar looking individuals, do not look the same.

Same with other animals. A bunch of brown horses look brown, unless you know that one is a heavy weight youngster still croup high, and another is an elderly Arab with stiff hindquarters and yet another is a pregnant mare.

NB I know nothing about dogs, but...

What about using the Smartwater type stuff that you can use to mark property? Isn't there one that is lots of tiny bits that are invisible to the eye but can be detected by the police? If you got that on the dog the owner wouldn't even know it was there.