No, she's not and she looks much better in-game than in pictures. They made the big cats too bulky. The deer are much better represented in comparison. And, yeah, the cheetah would probably be awful.
Seriously, guys, take Diana. She's lovely and rarely available free for the taking.
Yup, agree with all of this.
I was hoping this was true... I only get one in my first 400h, and suddenly got two more around 450. Problem: I still haven't gotten more since. I'd like to know how you're getting so many (excluding those you get from leaving villagers). I simply don't have enough requests (maybe two or three a day) to get many pictures.
Yeah, it can be a bit of a nuisance. Since I have Ankha as the only villager whose picture I don't have, I usually start by Solid Snaking my way towards her house. If she's in her house or outside, I'll talk to her, but if I don't get a chore (or if she is on Main Street), I'll just save and quit and try again. Usually this at least gets me one or two.
They also sometimes give chores when they ping in surprise, so if you're not getting any, you can always just stay away for a bit and then get in their line of sight. The worst is getting the delivery one, since you get the reward from the recipient instead of the request starter. Today I think I only got one, but I might try again later. You probably don't have this issue since you're trying to get them from multiple villagers, but just try to talk first to the ones you want to get requests from. Sometimes I'll be going to talk to Ankha and Groucho or Sparro will ping, and I'll talk to them out of resignation and they'll give me a chore to do. I'm not sure what the total number of possible requests per day are, but I'd imagine it's something marginal, like 6ish, give or take. 2 per animal at the most, though usually it's spread out through several.
Just my experience