I like working with vets for my stuff (epidemiology) because there are really interesting constraints. As you mention, one chicken is expendable, but you're wo

I like working with vets for my stuff (epidemiology) because there are really interesting constraints. As you mention, one chicken is expendable, but you're worried about tens of thousands of birds. A sheep is...mostly expendable. You have a low, market driven cap on what you can spend. A dog or cat, less so - there's an emotional connection, but there's also an upper threshold (with a wide range, and who has what threshold is often surprising). A race horse...well, let's just say equine ICUs are really pretty nice, all things considered.