When offering up advice in public places I sometimes include options that won't work in a specific situation but might apply to the few dozen or thousand that might read it. That's why I specifically mentioned that that probably won't work in this case. And I stress "probably" because I had a "blind" cat that could see a laser. The first time I lured her into the bedroom with a laser my then girlfriend, now wife, started crying because this cat had previously only detected sun vs shadow and she wasn't even entirely sure that was not at sensing heat thing.
The difference between sinks and floats is a pretty small amount of air. Now if the egg truly does go sideways then there is probably an issue because the air sack has broken. But floating itself doesn't say anything about the safety of the egg.
I'd avoid coddling too much. One tool I found that helps cats get along is the laser pointer. They both get so focused on that that they kind of forget that they're in each other's space trying to get it at the same time. Once they realize that they can be in the same space at the same time, without that hostility they tend to get along a lot better.†
It may not work in this situation because of the older cats health issues. But generally the closer you can keep them without any risk of attack, the faster they adopt each other or at least tolerate each other.
† sometimes I wonder if cats are soothed by hunting and exude some kind of smell that disarms other cats.
This is a tough one. When I find out someone has a 13 year old cat or dog I gently tell them that they need a second pet and they need it now. Because statistically in one to 6 years they will come home to an empty house and their soul is going to break when their buddy of more than a decade isn't there.
You have a cat in declining health. It isn't 100% possible to tell if their new issues are because of the kitten or if these were things that were going to happen anyway and the kitten's arrival is just coincidence.
All joining of a new cat to an established cat house is going to be rocky for a bit. I foster ferals for the local county shelter and SPCA and tame them up so they can be adopted. I have mean nasty cats show up and piss off the locals every month. But after a few days everything settles out and they all get used to each other because there is plenty of food they don't need to fight over and another room they can go to.
Except Junko. She is our 8 year old and still wants to be angry around cats that have been here one year less than her. Because she is mean. If I had the money I'd get her Prozac to see if it helps.
And that's where your next step is. Your senior cat needs a vet visit. Let's check their weight and everything else to see if they are getting enough nutrition. Is some medication to chill them out an option for them?
Do they have a spot in the house that is just theirs? Is the kitten making an effort to stay way or are they up in their face trying to make friends?
Only one sleestak hand. The other is clearly a laundry basket attached at the elbow.
This one was a classic example of Heathcliff not contributing anything at all. And, like you said. Removing him improves the flow. With him there is a line through the panel. Without there are two groups.
I didn't see it as an attack. I saw it as very poor communication. "Also" would have worked way better as it would have been a "yes, and" instead of a literal "but." I'm all about charitable readings. That's why I didn't attack them but pointed out their choice in wording. It was, as pointed out, snarky, not defensive.
Also they are counting the hits and ignoring the misses. They are forgetting that sneaking a backdoor into an open source project is extremely difficult because people are reviewing the code and such a thing will be recognized. So people don't typically try to sneak back doors in. Also, backdoors have been discovered in an amazing amount of closed source projects where no one was even able to review the code.
When offering up advice in public places I sometimes include options that won't work in a specific situation but might apply to the few dozen or thousand that might read it. That's why I specifically mentioned that that probably won't work in this case. And I stress "probably" because I had a "blind" cat that could see a laser. The first time I lured her into the bedroom with a laser my then girlfriend, now wife, started crying because this cat had previously only detected sun vs shadow and she wasn't even entirely sure that was not at sensing heat thing.