small kennel after parturition where the mother cannot stray from the young, and mothers will usually allow infants to be pushed underneath them by technicians if they stray too far.
Cheirogaleid odors are often very powerful. Coquerel's mouse lemur has a particularly pungent and penetrating odor; it is normal for the species, and strong odors do not indicate unsanitary conditions. There is no evidence that air exchanges of more than 10 per hour improve this condition.
Indrid mothers can be aggressive to infants during weaning, and this is a critical period when a juvenile can rapidly dehydrate and die because of insufficient fluid intake. Intervention involves administration of subcutaneous or intravenous fluids (not oral fluids). As stated earlier, sick indrids should not be kept in small cages for extended periods. For proper health and reproduction, indrids seem to need outdoor access.
Unlike all other prosimians, aye-ayes actively bite into wooden structures in cages. When they are to be transported, it is advisable to line the inside of airline kennels with wire.
Both lorises and galagos need a fairly high relative humidity (50–60%) to avoid peeling and cracking of the skin.
If their cages have insufficient or inappropriate surfaces for marking, lorisids (especially males) suffer urine burns. Ventilation and drainage holes should be drilled into the bottom of PVC nest tubes. Lorises and galagos might urinate in these tubes while sleeping and can develop urine scald if the urine is not allowed to drain. For that reason, some caregivers prefer sleeping boxes made of wood, which is more absorbent.
When transported in large cages, tarsiers sometimes died from injuries sustained because of their great leaping capacities and general excitability. It has been found that a very small cage—–20 x 12 x 14 cm (8 x 5 x 6 in)—with screensided panels protects them. Each box can contain two vertical dowels in central positions. The animals cling to these dowels but cannot jump. Tarsiers are very easily dehydrated, and lack of humidity can cause desiccation of the skin of digits or tail and lead to loss of all or part of these extremities. Humidifying procedures are therefore mandatory.