If the prime minister wishes to repair a reputation he once valued as an environmentally conscious moderniser and ensure he has a credible platform to speak from at this December's Paris Climate Summit he needs to use the next 100 days to prove the husky is alive and well.
If Cameron, on the other hand, can focus on improving the EU for everyone, whether in Western or Central Europe, he may be able to get the support he needs from Warsaw, no matter which party forms the next government.
Why Cameron should choose to spend political capital on trying to bring back a bloodsport when there are so many challenges at home and abroad is more puzzling. Why seek to appease the small (but admittedly vocal) minority who want to chase wild mammals across the countryside for pleasure?
A 100 days but already the parents of a child born on the 8 May would be justified in feeling nervous about her future. Since its re-election, the Conservative government has brought in a raft of policies that may profoundly affect their child's life.
Too many young people struggle to live up to their potential because of the situation they were born into. The government didn't create this problem, but some of the changes introduced in their first 100 days will make it harder to overcome.
It all seems so cut and dried. Hundreds of families and Kids Company staff protest outside Downing Street, blessed briefly by the presence of the charity's founder, Camila Batmanghelidjh. Charity good; government bad. Kids Company failed because the government wouldn't bail it out. Damn those heartless bastards. The reality is so much more complicated.
Whenever David Cameron talks about the importance of climate action over the next few months, remember this is the guy who oversaw a government unnecessarily roll back much-needed policy. In politics, credibility is a difficult resource to reclaim once it's lost, as Cameron has learnt in Brussels. He may be about to learn that lesson again in Paris.
Before the independence referendum last year, promises were made for substantial new powers to be devolved to the Scottish Parliament, but these are not being delivered by David Cameron's government - so a key task for the SNP in the months ahead will be to hold him to account and ensure that Scotland is given the job-creating powers it badly needs.
One hundred days of unbridled Conservatism is already a different beast to Coalition, with legislation like the European Union Referendum Bill and the Scotland Bill to prove it. But there's one policy that is giving me a sense of deja-vu - and it's hugely significant to millions of people.
Don't be fooled, the Conservatives have intentionally fallen out of the media spotlight and public eye, and in my opinion that was the best path to take when over 60% of the electorate didn't vote for a Conservative government.
It's not often that one of the world's biggest polluters fills me with hope that we can tackle climate change. But yesterday President Obama showed leaders around the globe what climate action looks like, and his timing couldn't be better.
It's understandable that Yvette Cooper is trying to get some headlines as her leadership rivals surge ahead in the polls. It's just ironic that she's chosen to do so by accusing the Conservatives of misleading people - when the truth is we're delivering more jobs, a stronger economy and a brighter future for our nation. It's just the same old Labour - they've no plan for the future, whoever ends up leading the party.
A Calais summit at European level is urgent. It should provide solutions to the migrants crisis while at the same time securing the tunnel to ensure that Calais and Dover are open for business as usual... The problem of Calais is not just a Franco-British question, it is a problem for the whole of Europe and the developing world. But the French and the English are on the frontline.
There is enough suitable previously developed land for at least a million new homes, much of it in London and the south east. If we make it easier to build in the Green Belt, these sites will be wasted and towns and cities will suffer. The Green Belt has been a huge success. Without it we would be immeasurably poorer. We should protect it, celebrate it, and go out and enjoy it.
We were promised a government for the blue collar. What we got is one for the blue bloods. In his first 100 days, Cameron has been blistering alright, tearing his way through the provisions and protections that provide some modicum of fairness in a country increasingly scarred by inequality. Power and resources in this country are being shaken up in profoundly anti-democratic ways.
As we approach the landmark of the first 100 days of his government, we at HuffPost UK have asked Britons to assess the state of the nation under the Conservatives. '100 Days of Dave' is a special blogs project looking at what's worked, what hasn't, and what more we can expect over the next five years of this Parliament. From grassroots campaigners to Government ministers, from critics to supporters, we aim to show a breadth of opinion as we take the national temperature on a range of policies including child poverty, mental health, the environment, housing and LGBT rights.