I have 2 Therapy dogs, Mac and Holly.
Both are rescue dogs, Mac's around 13yrs and Holly 10ish.
Mac's beginning to show his age a bit, has a touch of arthritis but is still a happy dog as long as he has his food and strokes! I do warn people though that he will 'mug' them for either.
Holly's got numerous lumps and bumps, had a large mammary tumour removed this year, the rest have been biopsied and are presently benign.
Of the 2 dogs Holly's the more nervy, more likely to bark at something ,, given that she was badly abused .. when I first had her she was scared of men and hated any long implement be it brush, stick or cane. 6yrs down the line she's now a brilliant therapy dog and loves attention off both males and females. She often gets up on the bed of one male resident for a cuddle!