@degsy I have been questioning myself since posting about there being larger animals (such as cattle, etc) at The School of Tropical Medicine in the 1960s but I have found the information below, which would tie in to how things were at that time. I could just have asked my sister to confirm she wasn't just winding me up when I was a kid but we have very little contact these days (long story). Although she didn't stay working there (though I don't know exactly what she did - lab assistant?) I know she has held a firm conviction throughout her life about 'helping' African people (her husband had the chance to go and work in South Africa and she told him to go if he wanted to but he would go on his own (because of apartheid at the time) - he didn't go (no-one to iron his shirts, the kopite gobshite!) and they ended up in Tokyo for a number of years).
The LSTM had and still have worldwide acknowledgment and acclaim for the work they do in human vaccines and were also at the forefront of developing the COVID vaccine. The work they do now still centers on diseases and conditions found in Africa (malaria, anti-venom for snalke bites,etc...) but maybe there are no longer larger animals dumping all over their nice new buildings (though Gila monsters are pretty large...).
Then -
Veterinary scientists from the Liverpool School of Tropical Medicine and the University of Liverpool’s Faculty of Veterinary Science have found that some African cattle have natural immunity to a parasite similar to that which causes River Blindness in humans. These new findings indicate that it may be possible to vaccinate humans against River Blindness. The disease causes blindness in thousands of people in some of the poorest countries in the world, particularly in West and Central Africa.
Now -
The Liverpool School of Tropical Medicine (LSTM) has a herpetarium that houses a diverse collection of venomous snakes, primarily those found in Africa, to support antivenom research. They also keep other animals like Gila monsters for research. The herpetarium at LSTM has the largest and most diverse collection of venomous snakes in the UK.
Apologies for posting what might be the irrelevance of all this but I needed to check, for me.