Tuesday, 21 November 2017

Can Dogs Really Sense Changes in Our Mood?

Not only will our pet dog pick up minute changes in its olfactory environment but also on tiny, almost indiscernible changes in our body language and general demeanor. As a means of survival, dogs have developed this ability as a primitive instinct. Some will call this intuition but this is when it all starts to get philosophical! Responsible dog trainers and behaviourists do not think philosophically but scientifically. Dog training is firstly a science and secondly an art. Some people have the knack, others don’t. Animals think in pictures; they simply don’t have the vocabulary to express themselves. Humans have turned this to their advantage leading to the many breeds (I am thinking specifically about working breeds) we have today, not least of which are assistance dogs. 

One branch of this is the training of dogs to assist war veterans and others suffering Post Traumatic Stress Disorder (PTSD). Returning to the original question, can dogs indeed gauge mood; are they capable of feeling empathy, even sympathy? In his 2012 blog, Stanley Coren cites an example of a dog reacting to a baby’s cries. The dog is clearly moved and seeks comfort from its human. Coren goes on to suggest this may be mood contagion and that the dog is comforting himself, as the result of a cortisol boost, rather than showing empathy or sympathy for the baby. However, later in 2012 Deborah Custance and Jennifer Mayer from London’s Goldsmiths College conducted research involving not only dogs’ owners, but strangers in the same room. In turn they would feign crying and the dogs would actually approach the strangers appearing to offer solace. 

Just this year, Dr Gregory Berns, a neuroscientist at Emory University, Atlanta, trained dogs to go inside an MRI scanner. There are striking similarities between a dog’s brain (and mammals generally) and a human’s. The caudate nucleus is rich in dopamine receptors. (Dopamine is a neurohormone and may be described as the ‘pleasure’ or ‘addiction’ hormone). This part of the brain is responsible for the actions of an individual when in a state of anticipation – the information is received and a decision has to be made about the course of action. The interpretation is that dogs are capable of feelings similar to that of humans and are indeed sentient*. It would appear we have bred our dogs not only to show empathy but also sympathy. The more sceptical might suggest that the dogs are actually responding to the slightest changes in body language or curiosity at a person’s reaction. 

After some 15,000 years of co-existence with dogs, it is unlikely that we share no emotional similarities – after all we are able to read their facial expressions and body language, as they can ours!

*As part of the EU Divorce Bill the UK have narrowly voted that animals are in fact NOT sentient beings – thus setting back their welfare by at least 20 years!

Picture shows Miniature American Shepherd pup - Bilbo Beutlin (Baggins) from Lords Fairy Tale.

Monday, 20 November 2017

A Brief Definition of Life!

Perhaps the most obvious criterion for life is being able to reproduce. If something is alive, then it must be able to produce copies of itself, which may or may not be identical. But this criterion is not sufficient on its own because crystals are able to grow and produce identical copies of themselves if placed in a salt solution. And no one would argue as to whether or not crystals are alive.

To the ability to to reproduce we need to add the ability to evolve. For something to be alive, the copies it produces of itself need to be able to change gradually across the generations in response to environmental factors. Evolution in the domesticated dog world can happen quickly, after only a few generations by selective breeding. If left to nature, the same changes would take millennia to occur through the process of natural selection.

Some questions to ask if an organism is alive: 1. Is it made up of at least one cell? 2. Does it metabolise - does it use and release energy? 3. Does it grow and change over time? 4. Does it respond to any physical, chemical or environmental stimuli? 5. Does it reproduce either sexually, asexually, and evolve? If the answer is NO to any of these questions, then what you're looking at is actually NOT alive! 

At its most basic level life must contain organic molecules of carbon and hydrogen.

Picture shows Miniature American Shepherd, Nuri, owned by Jess Ottaway.

Saturday, 18 November 2017

Why we should not leave our dogs to 'graze'!


Most obviously, a dog left with a permanent supply of food upon which to graze will soon put on weight.  Unlike a solitary cat, a dog will gorge – presumably a throwback of evolution and not knowing when the next ‘kill’ will be to feed a hungry pack. It could also result in poor training (especially toilet training), a lack of routine and a fussy eater due to loss of appetite. In a multi-dog household it may result, at best, in competition between the animals and, at worst resource defending and aggression. The daily highlight for many dogs is their meal, whether once, twice or thrice daily. Older dogs will invariably indicate their preference in this respect, most preferring smaller but more frequent meals. However, a constant supply of fresh water should be left out as even a 15% loss of body fluid can result in severe dehydration and even death. There is a special relationship with a dog, and other domesticated animals, forged, in part, by the human being the supplier of food and other comforts. This relationship may be jeopardized and the ‘head of household’ status of the human compromised. For example an elderly dog owned by an elderly human may receive little mutual bonding or interaction apart from meal times!

Picture shows Wolfdog, Ragnar.