Lion Passion

 

The safari season is upon us again and that makes me shiver with excitement.

As an introduction to the season I dug up my favourite photo from last year.

Lion Passion

Last year while on a safari deep in the central Kalahari we came across a pair of mating lions. When the female is sexually receptive lions will mate every 20 to 40 minutes for several days. They do not hunt or eat during this time and do not move very far. They were close to our camp and as a result we had  sightings of them every day and great photographic opportunities. On the last morning that we were there, they had moved almost into our camp and we saw them just after the sun had risen, providing the perfect light for this photograph that also captures something very interesting about lion (and other cat) reproduction.

People watching mating lions are struck by the contrast between the amorous gentle encouragement that the lioness gives prior to mating and the vicious anger after mating. The reason for this is that all male cats have backward-pointing spines on their penis and as they withdraw after mating, these spines rake the vaginal walls of the lioness. It is believed that this is required to stimulate ovulation in the lioness but it is also very painful for her – as is apparent in the photograph.

I’m about to leave on safari and am excited about all the surprises that await me on this adventure.

 

More (and more) Meerkats

Meerkats live in family groups of up to 30 individuals. It is no coincidence that Meerkats are social animals. The desert is a harsh environment and in order to survive Meerkats require the cooperation of the entire colony. So dependent are they o

n cooperation that research suggests that if the number of individuals in a colony drops below the critical threshold of 6 animals, the colony will not survive.

Meerkats are social animals

Meerkats are a diurnal species (ie they are active by day). In the desert most predators are nocturnal – probably in order to avoid the searing summer daytime heat (in a previous blog post I explained some of the strategies that Meerkats use to deal with the heat). This may be one reason why Meerkats have chosen to be active by day. However there are still predators about during the day.

Meerkats dig for their food and therefore literally have their heads buried in the ground for much of the day while they are feeding.

Young Suricate foraging

A young Meerkat digging for food

In order to protect the colony from a surprise attack during foraging, each member takes a turn to be on sentry duty. Their eyesight is incredible and not only are they able to detect animals at a distance of kilometres but they can identify the species at that distance. They possess a complex vocabulary which includes distinct alarm calls for different predators. This allows the rest of the colony to know immediately just how severe any threat is and from where it is approaching (land or air).

A meerkat scans the surroundings

Almost all members of the colony are closely related and this encourages cooperation and altruism which assists the survival of each individual. They all assist with the raising of the young and it is remarkable to watch them confront a threat in unison creating an intimidating united front. I was extremely fortunate to be present one day when one of a colony dug-up a Shield-Nosed Snake. These snakes are from the cobra family. Although they are venomous they also sham death until danger seems too close.

The Meerkat that uncovered this character immediately let out a very informative yelp and several members of the colony came rushing over to help. They warily approached the potential danger, while the snake was clearly shamming death. But when they got too close, the snake would writhe or strike at them and they would leap backwards baring their fangs and then carefully approach again. They kept this up for a while and eventually lost interest and left.

A group of Meerkats assess the danger of a shield nosed snake

I managed to get some video of this interaction. It is really interesting. Have a look at it:

http://www.youtube.com/watch?v=IG0WNUXCCXk

If you enjoy this youtube and let me know, I promise to upload more clips from this amazing interaction.

Meanwhile the meerkat says – that’s all folks:

That's all folks

 

Meerkats and the water mystery

A little while ago I mentioned that meerkats never drink water and yet they live active lives and require a lot of water for their metabolism. Remarkably they obtain all their water from the food which they eat. And they obtain all their food f

rom

underground.

They feed mainly on juicy beetle larvae, succulent frogs and crunchy (but moisture-filled) scorpions and in this way they obtain all the moisture that they require.

In the following photo you can see the last bit of a scorpion just before this baby meerkat swallows it.

Meerkats & the extreme desert temperatures

Meerkats are really remarkable. They are small mammals that live in an extremely harsh environment. Their small shape means that they lose or gain heat very rapidly and being mammals this means that they must expend energy in maintaining their bod

y temperature and they must find behavioral ways in which to avoid excessive heat gain or heat loss.

They are sociable animals and they live in burrows. At night the temperature in these burrows does not drop as low as on the surface. Also the meerkat family in the burrow huddles together for warmth. During the day, when the temperature becomes too hot to continue foraging, they also return to the burrow for the shade and cool that it offers in the heat.

Meerkats at their burrow entrance

The fur of a meerkat is very thin and this allows for rapid loss of heat but it is not very effective at keeping them warm. So on cold mornings they erect their hair to create a thicker insulation layer and stand with their darker tummies facing the rising sun, in order to warm-up.

Warming-up in the morning

However, when the temperature rises their thin fur is an advantage. Before they have to retreat into their burrow in order to escape the heat, meerkats often find a shady spot or scratch away the surface sand to expose cooler sand and lie there to rapidly dump heat from their bodies. This allows them to remain out foraging for longer.

ooooh that feels so nice & cool

The most effective way for a plant or animal to cool them-self is through evaporative cooling. In mammals this takes the form of sweating or panting and meerkats do use this strategy to a limited extent . . . but they never drink water! In the next post I’ll talk about how meerkats obtain water from the harsh and often dry environment in which they live.

Makgadikgadi Meerkats

I’m currently on the Makgadikgadi Pans in Botswana. This is a challenging desert environment and all life forms here are adapted to survive under the harsh conditions. The Meerkats (Suricata suricatta) are not only the most endearing spec

ies here but are also a window into the challenges and other species of this area.

Over the next few posts I will share some of the lessons I have learnt from these wonderful animals.