I have a dog, and photographing him has kind of turned into somewhat of a hobby now. Normally I use my phone for that, but I'm starting to reach a point where I could probably get much better shots if I had a "real" camera. Maybe it's because my phone's about three years old and starting to slow down, but it takes long enough to take a photo that often times my dog has stopped doing the cute thing, blinked, or moved just enough that the picture's blurry.
Also, we kind of do this thing where I stick a some treats in a bunch of cardboard boxes, hide the boxes in other cardboard boxes, and he spends like 20 minutes opening and shredding everything. It's adorable, but every video I take of it kind of sucks because I can't get high enough to film that without moving back and forward constantly.
So basically, I'm looking for something with a lens I can adjust to get some quick shutter speed while also letting in a lot of light, that I can attach to a tripod and use to take decent video. From what I read, that sounds like a DSLR camera, but there's way too much information for me to sift through online to figure out what I should get and most of it's about vlogging.
I can afford to spend $1000 on this, but I'd prefer to not to go over $800 if possible. (This would be a birthday/Christmas/graduation gift from my grandfather. He always tells me to buy something I want, but it has to be a physical object and not an "experience" like a trip, lessons, show, dinner, etc. My grandma was really into photography and DSLR cameras last/are fixable, so this is also like, his ideal gift to give me.)
Is that doable? What kind of cameras should I be looking at?