Both were Staffordshire bull terriers and Slough council has asked residents for help to track down the owners.
Already this year, 43 Staffordshire Bull Terriers have been handed into the centre.
The dogs involved in the attack, believed to be two bull mastiffs and two Staffordshire bull terriers, were not illegal breeds.
The Dogs Trust said it saw 83 Staffordshire bull terriers at its Bridgend centre in 2011, rising to 104 in 2012.
Armed officers destroyed four dogs believed to be two bull mastiffs and two Staffordshire bull terriers from the house where Jade's body was found.
It said dumped male Staffordshire Bull Terriers were of particular concern.
The warden told how anxious owners had been in touch after pups they believed were legal breeds such as Staffordshire bull terriers grew bigger and bigger.
BBC: NEWS | UK | Northern Ireland | Pit bulls handed over to council
The Trust said Greater London had seen a 148% rise in stray and abandoned Staffordshire bull terriers, which are considered "status dogs", increasing from 1, 641 in 2011 to 4, 071 in 2012.
Foster carers are needed for "sensitive" Staffordshire bull terriers.
BBC: Battersea Dogs Home: 'Sensitive' Staffies need fostering
Although properly-raised pit bull terriers can make good pets, according to reputable Georgia breeder Tara Vickers, fighting dogs - having been trained to attack other animals - are impossible to re-house safely.
When Vick's property in Virginia was raided, 54 pit bull terriers were found, some with apparent dog fighting injuries, as well as training equipment like a treadmill and a stick used to pry open dogs' jaws.
In the UK, the breeding, sale or exchange of pit bull terriers is banned under the Dangerous Dogs Act 1991 and people who already own pit bulls must keep them muzzled and on a lead in public.
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