I suggest training with the use of a FLIR, you can buy one from Cabelas. Have a friend use the device while you work either in or awat from your objective. Many people are not aware that you can take rusted brillo pads and aluminized powder from an etch a sketch and with an igniter like a fireworks sparkler or a strip of magnesium you have thermite.
With some trips to Walmart or Radio Shack I can take a $20 remote control toy and make a poor mans RC transmitter, I have done it at a gravel plant where I sit in a loader and with the guts taken from a Radio Shack car I made a transmitter with a four function swith to operate a conveyor belt and chute controls.
If I knew I was spotted by a FLIR I would set off a dozen thermite charges to overload the FLIR screen. But it depends on what the objective was, was it recon or was it a target of action, in and then out hot?
Depends but as far as dogs go I have not a lot of fear in that area. A MG from a helo, well that can ruin the day if you stay still too long in one place, but a smart person could buy several dozen green laser pointers, wrap them all together in a short tube with a common switch and with several dozen beams striking a person looking through a scope it may be enough to make them break off.
FLIR is always trying to gget people into training classes so you will buy ther products. Some or most are free.