I have looked into ASPCA's toxicology jobs for myself - they are 'remote' but you do have to live within 350 miles of their headquarters (which is good ol' Champaign IL). Pet Poison Helpline requires a Minnesota license but I think you can otherwise live anywhere. I think we have someone on the boards that has worked, or currently does work, for one of these companies - I am not sure if they would be willing to chime in? I've called both hotlines probably 100+ times each and from that POV, it seems like a straightforward, plug-n-chug type job. No liability or significant case responsibility, necessary resources are provided, etc. Last I checked, they were hiring for overnights, but that was probably almost a year ago.
Aww, thinking there is no liability in toxicology. It is all fun and games until you get a bearded dragon that ate an exotic plant that no one has any information about. Or a monkey that ingested zolpidem.
Toxicology is not a cookie-cutter "here is your treatment plan, thanks for calling, k bye." We have to be aware of drug interactions. We need to know what the patient is doing and how the patient has presented as that can alter our treatment recommendations. Sure, there are some cases that are going to be very straightforward and generally the same for each patient (ex: cat vs lily), but even chocolate cases can have drastically different recommendations just based on numerous factors.
I had a case that took me 1.5 hours to manage because it was 3 dogs vs. 20 different medications and supplements with each supplement having multiple ingredients. I have to look through every link to each supplement (most of these are links to the online product so not connected to our database). I have to know what ingredients are worrisome and which ones aren't off the top of my head. Then, I have to calculate doses for everything. Then some of those supplements have repeat ingredients, so, for example, supplements A, C, F and G all have vitamin D so I need to combine those doses together to get a total Vitamin D dose. Then determine for each of those 3 patients if there is a concern, what it is, what ingredients are concerning, which medications are concerning, and exactly what the vet needs to do to manage an exposure to over 20 different products.
The fun ones--- multiple cardiac drugs ingested at once. How do you treat hypotension from a combined ingestion of a calcium channel blocker, a beta blocker and an ACE inhibitor? The treatments are different, especially if the hypotension is from the calcium channel blocker.
Oh and don't forget about case follow up. Vitamin D toxicity is notorious for clinics to be calling back over weeks to months and there is no "chart" for "this is the right 55th step to take". You have to make decisions about how to proceed next in these cases, there is no set guideline just your clinical judgement.
While, yes, there are resources, you definitely have to learn a ton and quickly. You also have to lean on your clinical knowledge as well. We get calls of pets that are symptomatic and the vet just has a list of meds in the home, then we have to determine if the symptoms the pet has could be from any of those meds and, if so, which ones. These can be related to the meds or sometimes you have to tell the vet the symptoms aren't related and they need to do a work up of the patient. Then, the vet sometimes wants your clinical input on what could be going on then if it is not a toxin.
You also need to know when the treatments you are recommending are going to interact with each other. Such as giving intralipids, knowing that if any medications you are giving to manage symptoms are lipid soluble, the intralipids will affect those medications as well. Or giving cholestyramine with Vitamin K1, cholestyramine will affect the absorption of Vitamin K1 so this becomes important when managing a rat bait ingestion in which the specific ingredient of rat bait is unknown.
Anyway, I could go on, but toxicology is not super straightforward all the time. I don't do it anymore but not because I didn't enjoy it. I loved it. I just needed to find something else.