Although there is certainly plenty of violence against men too, a lot of the violence against women in this series felt very sexually objectifying. A lot of nude or partially nude women being violently brutalized in a sexually objectifying way.
Here are all the time stamps for dead or injured animals:
The Secret War: 1:20-1:23, 9:07-9:20, and 11:18-11:26.
Alternate Histories: 2:13-2:24
Ice Age: 2:14-2:20 and 8:18-8:50
Fish Night: 5:45-5:47
The Dump: Start to 0:50, 6:50-7:18
Suits: 3:09 to 3:30
Sonnie's Edge: monster fight scene 7:05 to 10:20
Shape Shifters: werewolf fight scene at the end
The tyrannosaurus episode of s4 - dinosaurs have to race while humanoid fighters kill each other on their backs. One fighter shoots a hook into a dinosaurs eye.. it's pretty quick and comes after a few fighters get killed.
They also get abused by riders to make their fights better. Pretty graphic episode. Two dinosaurs also get into a graphic fight to the death at the end. Super bloody and sad :( an interesting story but super gorey and dinosaurs do die.
SPOILER WARNING
In the episode For He Can Creep, the main cat is featured being both sad and angry at his owner for dealing with the devil to keep him alive
Implied cat death at the end of episode 4, “SUCKER OF SOULS”.
(spoilers ahead) It is not shown, but the last thing to be heard is a cat growling at a horde of vampires, then the episode ends.
Season 1 “Sonnies Edge” - ***VISUAL AND AUDITORY*** neon snake imagery shown before fight and snake tattoos on Sonnie. Serpentine hissing can be heard from the monster
Snow in the Desert: multiple characters have their hands damaged or even blown off. The main character has inhuman regeneration so his hand eventually explicitly grows back.
"Good Hunting" involves one of the main characters being forcefully turned into an android/machine against her will. It shows a couple graphic seconds of the process.
This is the WORSED show to watch if you are sensitive to any pain in shows or movies. There are many scenes that are very violent and have no warning. SPOILER! A girl gets stabbed through the brain then gets her head stomped on multiple times in just the first episode, I was too even too scared to go to the next scene/episode. Although its animation, it is very detailed.
Warning for season 3:
Ep 2 "bad traveling" around 1 minutes and 20 seconds the man * when the crab eats a human
Ep 6 "swarm" Around 11 minutes the man v*
The rest of the season is safe but there are several blood spits and times when you think it's going to happen but nothing else happens.
In the episode Smart Appliances, Stupid Owners, at the end a cat is featured pooping in a litter box very obviously, butthole and all on screen. This is very cartoonish, however
In the episode Smart Appliances, Stupid Owners, it is implied that a shower is used for an unintended purpose. In this episode there is also a talking vibrator.
In the episode Can’t Stop, the Red Hot Chili Peppers infamous 'Sock Night' is directly referenced on screen at the end
In the episode Close Encounters of the Mini Kind, a person is shown on screen running out of a 'toy' shop screaming 'pick me, pick me', implying they wish to be probed.
A lesbian woman is brutalized and a bisexual character is killed in "Sonnie's Edge."
The death of a lesbian woman is implied at the end of "Soul Sucker."
In the episodes For He Can Creep and How Zeke Got Religion, Hell and demons are major plot points, with the main enemies being sstan and a fallen angel respectively.
In Close Encounters of the Mini Kind, an alien takes off their coat and appears to have a very long penis between their legs. This sets off an alien vs humankind war.
Not much later, a farmer strips down his pants, attempting to fuck his cow but before this happens, he gets beamed up by the aliens.
Episode 1, right after the sexually suggestive scene, the main character of the episode gets "killed" in a very graphic way.
The scene in question is pretty much the ending from 13:30 to 15:18. It's an important scene but it's violent so it's best to be aware of it.