My dogs bite

Pogo will try to bite me if I restrain him. He has to be muzzled for grooming now. He will snap his jaws like an alligator if I have to pick him up. Bath time is a chore now. Even with a ramp, getting in and out of the car can be challenging.  He bit me in the face a few weeks ago because I held my face close to his a little too long.  I just wanted to smell him a little bit longer , you know? 
I am trying to memorize his unique grapey scent.
At 15 he is a bit senile.  He gets disoriented.  He gets scared.  Other times he acts like a puppy, prancing around, wanting to fetch or chase the other dogs.  He can't really do either any more, but he gives it a good effort and appears to be enjoying himself.  He can still do the weave poles...
In truth Pogo has never enjoyed alot of close contact.  For this reason he has never been restrained by anyone other than myself at the veterinarian's office.  He trusted me and would tolerate the handling from me. Sure, it makes me sad that in his discomfort and confusion now, I no longer have that trust.  But I adore this dog and patiently deal with his "aggression". He gave me so many wonderful years... 

Mamacita is a 16 mths old.  She was not well socialized as a puppy.  She is intense and reactive to sounds, movement, strangers, new dogs...well...pretty much everything!  She resists handling and restraint.  After 8 mths with us she is ALOT bettter.  Tons of desensitization and reinforcement for calm behavior in the presence of her triggers has made a HUGE difference. I no longer need a muzzle to do her nails - hooray!  She no longer tries to throw herself onto route 4 to chase cars! She can walk through my training room off leash and stay focused on me, rather than barking and lunging like a wild animal!  Like I said, she's ALOT better.  
But her intense personality still causes her to use her teeth inappropriately when she is hyper aroused.  She sometimes grabs my pant leg when I am rushing around the house.  If not asked to sit  first, she will grab my hand when I put it on the doorknob to let her into the yard.  She has grabbed my wrist when I have restrained her by the collar.  She looses her mind when she gets excited.  She's a little shit. :-P
We are working on her impulse control. 
On the flip side though, her intensity and quick reaction time is an advantage in Agility training. Given timely direction she is  super fast and accurate.  She is gonna be a fierce competitor.
I adore this dog and patiently deal with her "aggression".  She will give me so many wonderful years...