The cumulative result of this "wear and tear" is usually obvious later on in life as degenerative changes such as organ failures, joint damage, sensory losses of vision and hearing and the development of disease.
Antioxidants, such as vitamins C and E, which are found in nutritious foods and in various nutritional supplements, act as free-radical scavengers and help limit the damage caused as well as aid repair.
In addition to TLC, a well-balanced diet full of optimal amounts of nutrients with low levels of chemicals and preservatives is an incredibly valuable factor in maintaining your animal's quality of life and to support their immune systems.
Dental care is also of utmost importance to assist in nutrient availability, especially in our equine friends.
As the winter months roll in, older animals' circulation and their ability to thermoregulate and keep themselves warm may be limited. In addition to this, problems such as arthritis and incontinence are more obvious and animals are less inclined to move around, stopping regular wear of their nails which can grow long enough to put strain on their nail beds or even grow inward.
Their decreased flexibility also makes it difficult for them to groom themselves, especially if they are obese, leading to knotted coats which are uncomfortable and also harbour parasites such as fleas.
Warm and comfortable bedding will go a long way to keeping them comfortable and nurtured and regular, gentle exercise as well as massage will alleviate tension in their muscles.
When it is no longer possible to preserve an animals' quality of life, it becomes necessary to consider euthanasia.
This can be a difficult decision but is often a kind release from the pain and discomfort that some aged animals ultimately suffer from.
Dr Liza Schneider is director and veterinarian for Holistic Vets in Tauranga. www.holisticvets.co.nz