Hopefully you understand the cost of pleading not guilty?
You will lose the 1/3 discount off the fine for a guilty plea (that also then impacts the 40% surcharge), prosecution costs will also rise from circa £100 yo circa £650.
Let’s see the evidence you have, let’s have the location and we can give you a reasonable opinion on whether you/your wife/maybe even the dog is doing the sensible thing or not.