The new animal facility is designed to breed and house rodents with the best quality of macro and micro environment and house the maximum possible number of rodents per sf2. This new facility has 20,000 ft2 in three levels use for breeding and housing different strains and stocks of rodents and aquatic species. The building is design to use 6,000 micro isolator cages in high-density ventilated racks located into soft wall clean rooms. This area also has a 1,100 sf2 to house rodents and aquatic species under experimental procedures in conventional hard wall rooms. The washing and sterilization area have a rack and cage washer and a tunnel washer, the sterilization area have two autoclaves, one medium size and other bulk autoclave. Also in the clean side, the animal watering system is design with two Hydropac systems. The HVAC with its redundancy system have an automatic control and registry of temperature, humidity, light (intensity and 12:12 light cycle) integrate software, a CCTV in all entrance levels, halls and corridors, an electronic access control (key card and biometric) in all entrance and rooms. The engineering system is located outside the facility with 2 boilers for steam and hot water, a soft water system, water storage of 66,000 gallons of capacity, a water supply pressure system, an emergency power plant to cover all building, an air compressor and a circuit for regulated and emergency power outlets for sensible electronics components. The building has fume detection system inside and a fire alarm system outside.