No matter how much you try to train some dogs, they just can't seem to stop barking when they are excited or agitated. Which of course means that little Tiger is probably going to let the whole world know how he feels about the idea of being kept in one spot long enough for you to groom him. For Tiger, grooming is just another kind of game, one that requires plenty of barking and growling. Rather than trying to put a complete stop to all of his fussing, why not put it to good use instead?
Before you decide to give Tiger a weekly or monthly bath, you should check with his vet to see how often it is safe to bath him. Not all dogs should be bathed on a monthly basis, for some this will strip their skin and coats of the natural oils needed to protect their coat and skin. As for the barking, it may just be his way of letting everyone know how happy he is about hanging out with you.
Just because your little buddy is a noisy pooch doesn't mean you should use this as an excuse not to groom him. Instead, put all of that energy to work for you, making the grooming sessions easier, not harder. Use grooming time as bonding time and make it fun for both of you.