other patology it´s the tetano, a danger infection make for a bacteria on the wound in the horse. this can kill to animal with respiratory strike, but can heal with antibioic.
the bite of mosquito make encefalitis, it´s a virus that affect the nervous central system, the symtom are bad coordination and low movement, can finish with the paralysis, but there is a vaccine for protection.
the ticks are parasitics and are problem for the horses, for example infect with the lyme´s disease that make arthritis; have many more infections pass on fot the tick.
the influenza too it´s common in horses and affect the respiratory system, cause fever, cough and lack of appetite.
http://www.exoticpetvet.net/smanimal/rabbit.html
in this link there is many information about rabbits, the the text it´s very complete and summarised, have the just and necessary thing for the care about thi exotic animal; this website help much because the rabbits are animal very frail and need different method for the good live in captivity or like pets.