Yes, Viagra, but you’re not quite finished yet.
OK, so are they using Viagra to help endangered animals to mate?
Is PETA against that?
OK, so are they using Viagra to help endangered animals to mate? No
Is PETA against that? Well, probably, given that PETA is against pretty much everything, but not applicable
Are the reptiles semi-aquatic? Like iguanas? If so, is viagra helping them warm up more quickly after leaving the sea? Because it dilates the blood vessels allowing heat to circulate more quickly.
And, of course, if they can recover from the sea more quickly, they can mate sooner.
No on all counts
The part you’re still missing is the part that I thought would have been gotten first. But then, you guys ask different questions than I would.
So, are the reptiles fully aquatic? Fully terrestrial? Ground based? Arboreal?
Terrestrial arboreal
Is the sexual benefit of Viagra the “change of plans” you referred to in the puzzle?
Does PETA think the company is somehow cruel to animals?
Is Pfizer(or something like that) the company? I think they made/invented Viagra.
Yes to all
OK.
Is what makes them unpopular with animal rights groups the part we are missing?
Did they test Viagra on animals? Is this what pisses off animal rights groups?
:shrugs:
Is what makes them unpopular with animal rights groups the part we are missing? No
Did they test Viagra on animals? I don’t know
*OK. *
Were the relevant endangered species directly helped by the Viagra? I mean, did they take it themselves?
*Ah, how about this. *
Did the Viagra replace something else?
I literally just talked myself into another guess. I left my “out loud” thoughts up there. My next attempt at solving is:
Was the boon because people were eating the endangered species as an aphrodisiac and now less people need “fake” alternative medicine ones because Viagra actually works?
Yes! Finally! Traditional Chinese medicine used parts of geckos, seals, and other animals as potency aids, but now that Viagra is available and actually works (and is cheaper than the traditional “medicines”), nobody wants to buy those any more, and so there’s less reason to hunt those animals.
I was expecting people to start by asking why the animals were endangered: Is it due to human activity? (yes) Is it due to hunting? (yes) Was the company in question doing the hunting? (no) Was it for food? (no), etc.
I went from solving none of them to two-in-a-row!
Yay, me!
Pete is required to wear brightly colored vests at work, but only during breaks. Why?
If you are spoiled on this one for some reason, zip it! 
Are the vests worn for purposes of safety?
Does Pete have other requirements for his attire when he’s not on break?
Does Pete work in the entertainment industry?
kk
These vests, are they dayglo / high-vis vests?
Are these vests what we in the UK call waistcoats? Or sleeveless jackets such as workmen wear?
Do these vests have a logo on them?
Does Pete wear a suit when he’s not on break?
Is Pete an actor?
KK