Maybe its the worm laden poo they believe behind that some dogs eat and roll in, and some mange is highly contageous if they have rubbed along fences, posts, gates etc. Dunno.
Several times over the years I have seen signs posted locally (by farmers?) advising dog walkers to keep their dogs on leads as the foxes have mange. We have had foxes bedding down in shrubbery on the local sports fields for years where we walk dogs, never heard of any problems with illness.
Here you go Annie:
Can a dog get mange from a fox?
The parasite causing sarcoptic mange in foxes, Sarcoptes scabiei, is a mite that can infect both foxes and domestic dogs. The disease can be fatal in foxes but can be easily treated in dogs (contact your veterinarian for advice on this). However, the chances for dogs to catch mange from foxes are pretty slim.
Thanks Mups. He only rolled in the poo one time in the park and it was so disgusting. He was so proud of himself. I guess not all foxes are carrying disease. There was a sick fox that used to come into our garden. It was quite scary because it would come closer than is usual and had no fear. Half its fur was gone, poor thing maybe it was mange. That was a few years ago thankfully. The latest fox is a young and very handsome creature. He stands proudly on the shed like a king smugly taunting the dog who is going bananas.
I have a pretty good idea what that was then Annie.
Some have a nasty disease called Toxoplasmosis. I donāt know a lot about it, but I have a feeling domestic cats can pass it in their poo. Sounds like you said, and he had a bad case of mange as well.
My friend has a fox sanctuary, thatās why I know a bit about this Toxo.
She has 23 in at the moment. Then ones with āToxoā go exactly how you described. It affects their brain and they lose their normal senses - including fear - and seem sort of dazed almost. They will die in the wild, because they lose the ability to find food.
The disease you describe sound horrible itās sounds like the same one that cats get and is so dangerous to pregnant women and children . I didnāt know foxes suffered from that. Perhaps itās natures way of ensuring only the fittest survive .
Re mange
The mange mite is carried by foxes and dogs and can go on humans too However in healthy individuals it is tolerated and this is not usually a problem However in sick animals whose resistance is low the mange mite overwhelms the animal .
For that reason mange is prevalent in street dogs in third world countries and itās generally a secondary condition , the dog has malnutrition or is ill in another way and then itās resistance is down and the mange mite prolificates .
Ps I saw a beautiful fox out walking this morning .
If anyone is interested, here is a link which explains about Toxo better than I can.
There is a scientist who believes it can affect the human brain too.
Scary thoughts to start the day, Muddy. I am glad I always wear disposable gloves when dealing with litter trays!
Update Update Update
About an hour after I fed Holly, and after Iād got a sample of her poo, we braved the sleet and cold to see the vet again.
She now weighs 2.25kg (seems to have improved since Friday when the Goddard vet said she was under). She has no temperature, or fleas.
So, this is what I and the vet agreed on. Take more poo samples from tomorrow and Wednesday, and then get them in to the vet so they can send off for a comprehensive test. Continue with a bland diet, and she has now sold me five cans of wet food, so I can mix it in with the other stuff. And a course of antibiotics, to get some form of treatment started!
After today, I am now Ā£167 lighter (and also Ā£67 from Thursday).
When we got home she did a wee and is now napping.
I am still pleased with her generally, as she takes food happily and is drinking and weeing.
ETA. I asked for breakdowns of the two bills and was staggered to see what they charged for the 15ml pro kolin on Thursday. Over Ā£18!!! I paid Ā£11.99 for the 30ml elsewhere, arriving tomorrow. And been advised to continue with it. Pet Medic wanted extra for postage, but I used my Amazon Prime membership.
At least Holly has eaten and seems quite happy.
A lot of money you have spent though.
Sheās never really been off her food, Susie, apart from that one time after coming home from the vet Friday, from the aborted vax appt. and she happily took wet food later that evening, but didnāt want the dried prescription kibble.
Iām glad to hear sheās a big better, I think I must be lucky with my vet if something is cheaper in line he always gives me a paper with all the details and sends me home to order it, unless itās life and death needed that day of course.
Hi Julie,
Hope you are feeling better (and your dogs).
I have a breakdown of what Iāve been prescribed, and have ordered the pro kolin on Amazon. That will come tomorrow. I have found a website that could do the canned food much cheaper, (bitiba). Their price, including p&p, works out at Ā£2.08 a can. I could get it delivered but as it is with Yodel I would try my local shop, where I collect a lot of my orders. Saves me waiting in for a āwe failed to deliverā card! Lol.
She happily took the wet food, the prescription kibble, AND the crushed up antibiotic (1 and 1/2 tablets) and polished it off. I fed her after she woke up from her nap.
Sounds good jazzi, keep us posted ! Oh and give holly a snuggle from us 
Will do Julie, thanks. And will do, lol.
Jazzi, if itās any help, I order from these people. They deliver free for orders over Ā£29 and you donāt have to wait in as you can choose a 1 hour delivery slot. They are brilliant.
I order a monthās at a time.
When you look a the link, scroll down the page to the Hills Puppy food, and they have tins on offer at the moment that work out just Ā£1.47 per tin.
Any long term drug treatment my vet will give me a prescription for me to buy on line. Be careful where you buy from though.
I personally usually use these people mostly.
I am guessing, but if she did have Giardia, it is not always apparent in just one sample, hence she wants several.
But looking on the bright side, if a change of diet has helped, it may only have been that stuff the breeder suggested that was upsetting her.
Sounds more promising now anyway, and she is a good girl for sleeping through the night now too. 
Is Hills better than IAMs then? Is it gluten free?
I canāt say Annie, as I donāt use either. Youād have to read the ingredients and compare.
I thought Hollyās vet prescribed Hills Science, that is why I showed Jazzi these prices.
Morning all.
She was prescribed Hillās Digestive Care I/D.
Wish I knew why there were so many different lettered food!