Promoting weight gain
Okay. I work at a nursing home, and we have two cats here. Twink is a pudge, and begs for treats. Molly isn't fat, doesn't beg, and tends to run around like a nut on a regular basis.
The managers have decided that Molly is too thin. I don't see it, but they're the managers, so I've been told to 'do something about it'.
As it is, they're free-fed dry food and get treats throughout the day, though not too many at once since that makes them throw up. Any time I offer treats, Twinkle runs to get as many as I'll give her, and Molly usualy comes to see but, more often than not, leaves her portion for her sister. If I approach her with food, she runs. (She's the kind of cat who will only interact on her terms. She's sweet, but only when she wants to be.) She does come for wet food, but that has also been known to make her barf.
I've considered giving her some kind of ooze-like suplement, like the hairball goo I give her. She won't lick that stuff up, but putting it on her tail for her to lick off seems to work.
Any other suggestions?