|Image from Encyclopaedia Britannica|
They use toxic saliva to kill. Yes, the solenodon is a venomous mammal2, and its bite is used to subdue their prey—various arthropods. It is also used as defense against potential predators like snakes and birds of prey. Their name means “channel tooth,” which is likely the way to channel the venom, though I can’t find a source for that. Solenodons have an obviously positive impact on people, since their insectivorous habits help remove pests, and they are unlikely to hurt anyone unless you try to get bitten.
The solenodon is another island species that has been destroyed by the introduction of various carnivorous mammals. While rats, cats, and dogs have shown up in past posts, mongooses (mongeese?) have been introduced to Cuba, and destroyed the population. Enough that they were thought to be extinct, since none were found between 1890 and 1975.
Conservation is minimal, mostly relying on the fact that much of their habitat is within two Cuban National Parks.
1There also exists the Hispanolan solenodon, which is very similar to the Cuban variety, only on a different Caribbean Island. And cuter.
2I swore I had heard that the platypus, with a small spur, was the only venomous mammal. I was wrong.