What is the lifespan of a Flerken?

Kevin Feige has spoken about this with Slash Film but gives no definite answer only stating that they probably have a longer lifespan than cats.

I’m wondering what has Goose been doing for the last 20 years? Can we get like a short film on Disney+ where we would like see that Goose was secretly offscreen at all of these important events?

I love it! And by the way, that’s one of the fun things about Disney+ is we could actually do ideas like that. The fun thing about introducing new characters and all these movies is suddenly going from a character that maybe you’d heard of if you’d read the books, but if you hadn’t, you’d never heard of him. And then you see the movie, you go, “I want to see more of that character.” And the fact that you and other people are asking, “When do we see more of the cat?” The question is “how long – what is the lifespan of a flerken?” It’s a good question.

I was just wondering that earlier today because the lifespan of a cat is 15 years, so would Goose be dead?

But that’s a cat, a flerken might be longer lived. And as we know from the comics, flerken procreate quite a bit. I don’t want to say Tribble-esque, but there’s sort of points in those comics where they sort of are in terms of how many appear. So I’m sure there are more flerken out there. And is Goose out there? She could be.

_{Slash Film, Interview: Kevin Feige Talks ‘Captain Marvel’ Spoilers, The Future of Goose, Stan Lee’s Tribute, and Disney+ TV Shows}

Samuel L. Jackson has commented on this in an interview himself stating that Goose was probably in his office up until at least the start of Iron Man. As it is an actor stating this though I’d take it with a pinch of salt.

What was Goose doing, where was he, between the end of Captain Marvel and the beginning of Iron Man?

He was in my office apparently, there’s all that stuff. Even though we never saw him he was around. I mean we got the, y'know, the thing back somehow. I walked in my office, he'd thrown it up, it was sitting on my desk or whatever so.

As we know Goose was around in 1989 before Mar-Vell’s death and Iron Man takes place in 2008 that would make Goose at least 19 but he would be a bit older because Mar-Vell was familiar with him. So flerkens appear to be able to live up to at least 19 years.