Which factor is not relevant when determining the design of caging systems for animals?

The design of caging systems for animals is primarily influenced by several critical factors that ensure the well-being and proper management of the animals housed within. One of the main factors is the purpose for animal housing, which determines the specific needs for the environment, such as whether the animals are intended for research, breeding, or observation. Additionally, species-specific age and weight are important considerations because different species and age groups have varying space, ventilation, and enrichment requirements to promote their health and reduce stress.

The social dynamics of the animals also play a significant role; understanding their natural social groups is key to facilitating appropriate group housing, as some species thrive better in social settings, while others may be territorial or solitary.

On the other hand, while cost is an important consideration in the overall planning and budgeting for animal care facilities, it does not dictate the fundamental design requirements for the animals themselves. The effectiveness of the cage system and the welfare of the animals should not be compromised solely based on the cost of materials or construction. Thus, focusing only on cost without considering the biological and social needs of the animals can lead to inadequate housing, which compromises animal welfare and study outcomes. Therefore, cost is a relevant factor but should not be the sole focus when designing cages.